I think it depends on who he fights. We'll know more of how good the fight is going to be when we know the quality of his opponent.
I also don't think it would make you any less "hardcore" if you want to watch ufc 100 over this possible affliction card.
I just think it's you're preference, I think Fedor is great and love to watch him but I think UFC 100 has a really good card, the lesnar/Mir rematch, henderson/bisping, and then the fitch/paulo thiago fight- i want to see if thiago is for real that's going to be an interesting fight and then Jon Jones is really exciting and I'd like to see how he has improved.
and like I said for me, I'm a GSP fan so i never miss a chance to see him regardless of what else is on. But even for non GSP fans GSP still has an exciting and dangerous fight against alves and the card in general is stacked, No one is less hardcore for wanting to see it, regardless of what Affliction comes up with.