Skyrim being #2 is downright wrong. I am not going to say it's the most innovative game, but it's not overrated. I really disagree with that.
I had a strong reaction to him placing Skyrim as #2 as well. The game was badass and for me I found Skyrim much more enjoyable than Oblivion and Morrowind (both I put considerable time into). For starters, it took me quite a bit of time to "get into" oblivion and morrowind. Skyrim sucked me into its world right from the beginning. Also, the dungeon design in Skyrim was so much better than oblivion...i wonder if the author had really played these games at all.
I can think of a TON of stuff to criticize Skyrim...in particular the immersion in the world starts to ware out once you have played long enough (mostly because of the repetitive things people say and the inability to ever really **** anyone or any faction off in a meaningful way). But those criticisms only come out after 10's if not 100's off hours of gameplay and in my book if you have made it that far then you got your money's worth.