Titanfall won't be groundbreaking. What exactly about it is groundbreaking? Mechs? Able to jump on walls? AI controlled mechs?
All of those have been done before. Halo was groundbreaking because it paved the way for first person games on consoles. Was the first popular game that had an easy to understand control setup. Halo 2 was groundbreaking by bringing online multiplayer to mass audiences. CoD 4 was groundbreaking by changing the multiplayer up in such a way that allowed it to become "casual" and "competitive" at the same time. AI controlled bots have been around for years, and running on walls has been around for a while as well.
What exactly does Titanfall have that's groundbreaking?