Well, I don't think so at all. For gameplay mechanics (grenade types, dual-wielding), graphics, level design, multiplayer options, Live options, and everything else, 2 really outpaced 1. 3's jump is less substantial, but we have to consider all the new weapons, vehicles, levels, new control scheme, the X-Button items, and again with more shlt to do on Live and in LAN, and of course the graphics. It's a far cry from the Madden series, since the first Halo came out in 01, and the second came out in 04. That's the exact same frequency as the Metroid Prime games, and (oh I'm gonna piss someone off) Halo has shown much more advancement within its own formula than Metroid Prime ever did.