For this comparison, I'll say Skyrim FW and U3 After 1 year.
Still kind of strange that you're only including the 360 version of Skyrim though. The PS3 and PC versions should also sell well.
I want to buy Skyrim, but personally I'd get it on the PC as I just built a nice PC earlier this year. My friend also wants to get Skyrim and he's getting the PC version as well. My other friend wants to get the Skyrim as well, but he's getting the PS3 version as he only has a PS3. In your comparison all of us are not included in those sales as we are not getting the 360 version of Skyrim.
starcraft: "I and every PS3 fanboy alive are waiting for Versus more than FFXIII.
Me since the games were revealed, the fanboys since E3." 
Skeeuk: "playstation 3 is the ultimate in gaming acceleration"
