Well, yeah, but it still colors your perception of that game or that year. Like, let's say there was a year - say 2012 - you played a bunch of games that you loved, Some were released in 1997, one is from 1985, and then there's three from 2010 and one from 2012. The most awesome game from that bunch to you was the 1997 one, so you'd obviously say 1997 is the best, right? But it turns out there are no other cool games for you from that year, and you know like only one or two games from every other year, and still you feel like 2012 was great to you because you played all those games.
I don't mean to derail this thread, but this just explains my way of thinking in this regard, and why it may be hard to decide on one specific year