WiC is geared towards multiplayer, if you do not like multiplayer then go with CoH. But WiC adds a very nice feel with WW3 and all, different then any other game i've played.
The 2 things i dislike most about WiC is that you can't tell infantry to hind behind a car, or in that crater, or in that rubble, CoH does this VERY well. The second is that if you zoom in close enough to see all the details, you get tunnel vision and will raped.
Simple way to figure out if you'll like WiC is to play the free 1.2 gig demo that has one single player mission and one multiplayer map, both with nothing left out (cept nato, but thats due to the maps).