Personally I think MDC do a decent job with their rankings, it is a pretty fair reflection of who is doing well, who is coming up and who is fading.
There will always be gripes about who should be where and whatever, but that is often to do with someone's favourite not being where they think they should be ranked.
MDC are a fine site, with a great archive and the folks there know what they are talking about. I don't think any site who compiles this kind of list will always get it right and folks will always beg to differ.
Personally I'd like to thank all the staff there for all their insights and for compiling the list, which I'm sure
is a major benefit to visitors there, who might not follow fashion and models as closely as we members here do.