It's a tough one. One game was released over the holiday period with great reviews and was put into B1G1F and discounted deals within its first 10 weeks of release.
The other has come out with mixed reviews and very little advertising but has the whole Evo thing behind it, but most likely will stay at full price for a while.
I think ROtTR will take the first 10 weeks, but SFV will win lifetime sales. Weren't there articles saying it has sold pretty poorly everywhere 2nd week?