Both CMers and Nurseries follow the EYFS. (Earyl Years Foundation Stage + the Curriculum) A CMer has the flexibility to follow the individual child's needs more if anything, IMO
much tighter measure on nurseries for the environment ur baby will be taken care of in
Not sure what they mean by this. CMers are inspected by OFSTED as are Nurseries. Both have 'rules' about space, welfare, food, etc
better learning opportunities in nursery and interacting with similar age babies / children
In their pre-school year, I agree there is value in being part of a larger group as a sort of half way house before school - getting used to not being the only child wanting attention and learning things like sitting as part of a larger group or lining up or routines for dinner can be helpful before they start school - but most CMers will take them to groups where they do that sort of thing. As babies, they are not developmentally ready to be playing with their peers. I would suggest they would have better learning opportunities from a good quality CMer when they are younger, not least through the fact they go out and about and aren't in the same room for 9+ hours a day.
childminder can be CRB checked but the guests and relatives are not Others who live in the house are checked and they wouldn't be entertaining guests whilst working.
you are relying on one person so if they are ill or on holiday u have to find alternative cover
Some CMers have back up, reciprocal arrangements with other minders, but, in my experience, CMers are FAR less likely to go off sick than employees on a minimum wage. It is their own business and they have a close relationship with the families. In years of using CMers I've only one had one take any time off at all - that was a planned operation
Just to bust some myths.
However This question is asked regularly on MN - understandably 
It really comes down to personal preference.
I liked the idea that my dc were in as close to a home environment as possible. My (now grown) dc have fond memories of their time at CMers.
Others will come along and tell you how well their dc thrived in Nurseries.
Depending on what hours you will need, CMers are often prepared to be more flexible with hours whereas a lot of Nurseries will charge 'per session'.
There are some great Nurseries out there, and quite a few poor ones, along with many that are 'good enough'.
I suspect there are some poor CMers out there, but there are also plenty of brilliant ones and I'm sure others that are 'good enough'.
None of us can say all CMers are great or all Nurseries are great.
You have to meet a few who have spaces for you and get a 'feel' for what you prefer. Everyone prioritises different things.