Dance - I'm slightly confused as to how you are interpreting the articles you have linked to in a way to gain insight into a comparison of the risks between a forceps/ventouse delivery and an Emergency CS undertaken at the point forceps/ventouse would be recommended. My observations are as follows:
www.sciencedirect.com/science/article/pii/S0002937803011785
This article is not available in full without payment, which I am not prepared to do for this purpose. One of the opening sentences, however, states that the study considers women who were delivered vaginally, and no reference to CS (at any point) is made throughout the publicly available information.
www.nejm.org/doi/full/10.1056/NEJM199312233292601#t=articleTop
This article does compare the results from vaginal birth (subdivided into unassisted, forceps and ventouse) with those from CS (subdivided into elective and "women in whom the procedure was indicated after labor had begun"). However, the sample population was small (the tabular data relates to just 102 women) and there is no indication of how far labor had progressed in the (9) "women in whom the procedure was indicated after labor had begun".
www.cmaj.ca/content/170/5/813
In terms of data, this article seems to be primarily the author (Mary Hannah) referring back to a previous study of which she was the principle author (the Term Breech Trial), which considered outcomes for singleton, term breech babies with planned vaginal delivery or planned CS. In this article she tries to draw conclusions on how these results may be interpreted for a planned CS vs. a planned vaginal birth of a single cephalic baby - but comments that planning for a vaginal birth includes the risk that an emergency CS may be required, "which carries higher risks for mother and baby". However, these risks are not discussed.
(I'd also like to comment here on your assumption that because research is undertaken by surgeons in large hospitals it is safe to presume they are "skilled". One of the biggest retrospective criticisms of the Term Breech Trial was that the practitioners involved in delivering breech babies did NOT have sufficient skills and experience to do so safely - emphasised by the way reminders had to be sent out to participating units re. the approach they were supposed to be following. I know nothing of the authors of the other articles you have linked to - but my experience and analysis of the TBT in particular has lead me to read all papers critically and to try and work out what assumptions I'm making before I put all my trust in them.)
onlinelibrary.wiley.com/doi/10.1111/j.1471-0528.1981.tb01211.x/abstract
Again, this article does not seem to be available in full without payment. The abstract available for free is so brief I'm not sure what conclusions can be drawn - other than that 27 infants who died were found, on autopsy, to have suffered intracranial haemorrhage and that forceps were involved in the birth of all 27 of those infants. However, there were a further 36,397 infants involved in the trial for whom no information is available in the abstract regarding how much assistance was required during their birth.
The authors do make the statement that "The main conclusion is that serious injury to the forecoming head at birth is almost invariably a direct effect of forceps." - but to me that is a very different conclusion to your comment above that "intracranial haemorrhage in the baby is often a direct result of forceps being used". Without knowing how many of the other 36,397 infants were delivered using forceps it is impossible to comment on whether forceps "often" result in this injury or not.
www.pregnancycare.eu/pregnancy/labour-and-delivery
I'm struggling to find the statement "forceps are associated with maximum morbidity", or anything similar on the page you linked to. There seems to be very little mention of forceps other than in that if you plan a vaginal birth you need to be aware that you may wind up with an instrumental delivery. I'm a bit confused as to how this page is supporting your arguments.
Like some others, I'm struggling to see how the links you have posted are supporting your hypothesis that and Emergency CS (performed at the point when forceps or ventouse would be offered and recommended) is safer than proceeding with an assisted vaginal birth. This particular scenario doesn't seem to be considered in any of the articles you linked to
. I'm wondering if I've managed to read the wrong articles as you seem very strong in your beliefs and I'm really not managing to see how the information I'm reading could be interpreted in that light - that assisted delivery increases risks, yes. That the use of forceps in particular increase the risks of damage to the pelvic floor and the likelihood of the mother developing incontinence, yes. That an Emergency CS undertaken at the point where assisted delivery would be recommended during a vaginal birth is demonstrably safer proceeding with an assisted vaginal birth - this scenario doesn't seem to be considered.
(Just for clarity, I have no medical training whatsoever. However, I qualified with a BSc and spent 10 years working in an industry where I was required to read scientific papers and form opinions and recommendations that were then presented to clients who needed to make multi-million pound investment decisions. More personally, I did a lot of digging into the safety of modes of delivery of breech babies when DD1 decided turning head down was far too boring - hence my specific knowledge on the Term Breech Trial).