well I have MK vs DC and I love it.
As always there will be variables depending upon your preference that will gauge the answer of "it depends", and obviously I haven't played SFIV yet so my opinion can't really be 100% fair, but..
I think MK vs DC would be the way to go.
1. given the art style choices for the game I think that the direction that MKvsDC goes it allows for it to have far richer and in depth enviroments. Metropolis stage is quite impressive.
2. charachters - well obviously you have two distinct sets of charachters here. So if MK style is stale to you, there is a very true to the charachters version of the Super heros and villians. Midway did an excellent job painstakingly designing each charachter to be fairly unique and did an overall good job balancing them. As usual a couple charachters can be cheap but, is there a fighting game where this isn't so?
3. MKvsDC is a releltivly new idea (diferent direction for the series), in comparison, it seems to me that SFIV is pretty much SFII ver. 21. That may be kinda unfair to say, but thats how it looks to me.
So yeah dude, I can't say what Multiplayerwill be like but I'll play you on live in MKvsDC if you decide to get it. It's my recommendation anyway.
"Let justice be done though the heavens fall." - Jim Garrison
"Ask not your horse, if ye should ride into battle" - myself







