all right ill break em down the way I see it.
Collins is not getting much more than 25MPG these days, and depending on certain matchups, he may not even see 20MPG.
his strength lies in the fact that he is relatively quick for a PF and still strong enough to hold his own in the post. his offensive game is dreadful, though he can get an open dunk now and then. he does not block shots, but he does draw charges and force TOs. and when he's hot and when pigs fly, he can score over 20. (he has done so i think 4 times in his career, once last year with a 3 pointer as well)
Moore is primarily an energy guy. comes off the bench to eat up rebounds, block some shots, clog the lanes, and try to be very active. but he is rail thin and cannot defend the better post players in the league.
what do I think? keep those two in a platoon system and use em depending on matchups.