Because all it essentially is is map alterations. Adding a box here, a catwalk there, etc. You're welcome to post videos of forge maps that look and play completely differently from the standard unforged maps. I haven't seen anything drastically different.
Sorry to break it to you, Shake, but you're completely and totally wrong on this one.
There are drastically different maps you can make it Forge.
I know, but my argument about Black Ops 2 having vastly more content and variety still stands.Not when Forge and Custom Games (even neutered as they are) exists. And the theater mode in Halo has always been better than the theater mode in Call of Duty. That said, I'm sure the campaign is better, because Halo 4's campaign is... wooooo. Yeah.