Let's say you built a team perfectly suited to fastbreak / FCP team - absolutely elite in ATH, SPD, DEF and STA, good in BH, but pretty average in everything else. You could probably compete for a title if your four cores were high enough. But what if you then converted that same squad to motion / man or triangle / man? How much effectiveness would you lose?
(I know this is a vague hypothetical, I just want to see if others think about this differently that I have.)