I dont really see how you can say that about James. No one else on that team took a consistant secondary role to bosh as a scorer. So he had to do it. When Peterson was hitting he deferred quite a bit. When Charlie V came on late in the year his stats dipped.
Howard is a good team player without a doubt. IMO its tough to justify 3 players from 1 team though unless that 3rd guy is very talented 3rd option. Amare/marion/nash, duncan/parker/ginobli, you cant omit any of those guys. But in Howards case he feeds off of others and that alone doesnt make him great.