Yes, because YYG, a company whose mission statement clearly says that their goal is to provide a slew of casual games for free, is totally going to host an "epic" game competition.
Why not? Of course they won't set up a competition for games that boast 100's of hours of gameplay...but epic doesn't necessarily have to mean that. I think a lot of people, even YOYO are confused as to what casual is supposed to mean. Casual games are supposed to be ones that you can play every once in a while and still beat in a relatively short amount of time, or still take away as much fun as possible in a short amount of time. Casual games are NOT supposed to be games that you play once, get bored with, and never play again. Those are "bad" games. So in a sense, Yoyo could easily set up an "epic" competition catered to a slightly longer, more involved game. In fact, I think that would be a great idea. Instead of a cluster**** of space invader clones, the site could expose its players to something a bit more sophisticated than A+D spam.