No i dont think so because if your tall your not fast and if youre small your really fast but of course you need a person in your team who has to be tall
Javier Pastore is 6'3" on fm11, and he's fast aswell... I guess it's not a rule that's set in stone. It'd be interesting to see who the tallest player is on everyone's save though. There's a regen on mine who's 6'9".