This contest is random and meaningless anyways.
Like, why did they pick now to run a "series of the decade" competition? The console generation is not even over yet. We're only 3 years in to this decade. A literal decade started back at 2003 which is such a random f*cking year to begin counting at. Nothing significant occured in 2003 for gaming. Not to mention starting in 2003 cut out GTA 3, Morrowind, a f*ck ton of Zelda Games, a f*ck ton of Mario games, etc. Nothing significant at all about this random timeframe they chose.
If you're into conspiracy theories, it would seem like Gamespot just wanted to quickly crown a "series of the decade" before GTA V could come out. Like how Amazon ran their "Game of this Generation" contest a couple weeks back. Makes sense seeing as how there are totally no more major games coming out for this generation, and "next-gen" doesn't start until November.
I like Skyrim (never played the other games) AND GTA though, so whatever at the results. Skyrim is basically medieval GTA anyways.. (Or the other way around, what ever.)