Only time will tell. It also depends on more than just progressed sales and quality, it's the emotional things you remember.
If you think back to your favorite games, it's the ones that hit home emotionally that you remember. They joy of opening a new game, or that WOW factor that a moment has on your psyche.
CoD will be remembered because everyone has a feeling about it. Those who play it and enjoy it remember the anger they get at bad games, or the joy and excitement they get from getting those game winning kills, those strong records, and intense moments. Those who don't will remember how the game didn't meet expectations, or the emotions they felt when they had to defend their claims. It's the reason why Bioshock will be remembered by me, having to defend my claims, while it's biggest fans remember the moments that everyone tells me I need to experience.
My guess is that if Skyrim is invoking you to leap out of your seat at a big kill, is making you emotionally connected via the story or anything, you'll remember it.
Btw, I always will remember Metroid Prime because I remember fighting Meta-Ridley and while strafing around him I was literally moving my wheely chair left and right and moving my body with Samus...haven't found a game to get me THAT involved since. That's how you remember games