For the campaign,
And as for the multiplayer, I think it's pretty awesome. Yeah, the higher ranked will have the privilege of getting some ordinance drops faster than normal players, but, from what I heard, 343 tried to make these advantages not completely overpower someone or anything. They still tried to make it overall balanced.
And the ordinance drops make it a lot more exciting, it makes matches different every time, instead of there always being a sniper in the exact same place, and everybody does the same tactics every match.
Either way, it's personal preference, I don't think there's much facts to really prove anything concerning Halo 4 multiplayer.
Bottom line, though, I like it quite a lot.