I was told when I had DD1, that as my nipples and areola was so pale, that I would have a harder time with soreness etc as my nipples and skin was obviously more sensitive.
the same MW said that anyone with pale skin and freckles would find it hard.....their skin is thinner (?) and so less able to cope with the constnat 'rubbing' in the first few days/weeks and so gets 'friction sore'.
no idea if this is any true'er than the 'correct latch = sore pain' arguement, but she was right and I was sore......as I also was with all my others (I fed all five).
BUT.....none of my other friends breastfed, so I have no idea if she was telling the truth, of whether it was her way of preparing me for the possible pain that I eneded up with.......and I was latching her on correctly too, as for the first few days I had constant help.
it did however make me more aware of how all my others did feed, as the soreness was different if they did latch on badly, and it was entirely different again when I had DS2 (DC5).....and he had tongue tie!
I think tho, that for the most women, there will be some initial soreness just because, to start with, you are constanly using the same part of your body over and over again......it is friction use rather than bad latching IYGWIM.
maybe I am comletely off the mark here, but that is my theory, and it helped me