I can't really say, but so far I've seen a LOT of sequels, many of which are awesome, Mario Galaxy, Brawl, even Halo 3 I guess, but they're still sequels, and they're arguably not as huge as the previous sequels or originals.
Like, compare that to last generation with all the new GTAs, MGSs, SSBM, Halo 1 and 2, Half Life 2, many more...you could say that so far, last generation looks to be better.
And think of the NEXT generation...controlling games with your brain? Or 3D vision games? Or simply big advances in processor and graphics power, offering graphics that REALLY look like real life, not just Crysis levels, which obviously still have a ways to go.
LEFT4DEAD411.COM
Bet with disolitude: Left4Dead will have a higher Metacritic rating than Project Origin, 3 months after the second game's release. (hasn't been 3 months but it looks like I won :-p )