COD MW Reflex is better than both games but it isn't a WWII game.
MOH Heroes 2 has great controls and 32 player online. The single player campaign is short and rather uninspired feeling though.
COD WAW doesn't have the same degree of control customization but they do work well enough. It only has 8 players online but the matches are tighter feeling than MOH's and I found them more enjoyable. The single player campaign is also much better than MOH's.
So I would say COD WAW is the better game overall, both for single and multiplayer.