I prefered the Turok trilogy over the Halo trilogy. Seriously, the only thing Halo did different was have you throw grenades and riding vehicles all over the place in multiplayer. Yeah, sure, Halo looked better. That was it. I'll admit to not playing the third one, but considering the story of the first two, it sounds alot less interesting than Turok's story.
Halo only has graphics over Turok. Nothing else.
I would want any Halo player who loved the third one to say something that makes Halo different from all others. Because as things stand, Halo is only overhyped and generic with the added use of vehicles and a lacking depth in multiplayer.