[fhbdukfrh]

How about "a team of skilled developers is likely to be successful with any software development approach; an inexperienced or untalented team is doomed regardless of the chosen methodology"

After 20 years that's been my experience

[josho]

Yes. But unfortunately not every team can be made entirely of rockstars. So the purpose of a methodology is to increase the probability of success for a moderately talented team.