Terrible opinions, heh. There are always terrible opinions, that's why they're opinions. I'm sure they expect that not everyone will agree with their top 100. They'd be ignorant not to :)
Top x lists are always controversial to someone. But if it spawns chatter, I think that's the best part of them, and hopefully the list has done its job :)

That said, did they state any criteria for the list? If not, I think the list is legit. eg, if nostalgia is a factor, then Doom most definitely has Halo 3 beat :)