This is all I been trying to say. Its not Madden, you can't make the player better. BTW you go look at majority of his passes he caught he was wide open, he didn't beat his man one on one.
Calloway had plenty of games were he was nonexistent or his catches were few and far in between. His stats are accumulative of a 17 game season not indicative of an ability to be a consistent weapon in an offense.
This does not make him a bad player just he has shown us his ability and you see why he was undrafted he is not a front line player though capable of the occasional big play.