>>2323407The primary guns have limited elevation yes. But the cathederal part of the titan has a shitton of AA and support weapons on it. So you'd better hope that the Gaw doesn't get shot down by the defence laser or any of the battlecannons.
In theory if you could get a couple of Zaku's or Goufs on it (and they're somehow able to have a stable footing) then the thing might be pretty fucked, but I don't think I'd want to be that close when this thing goes down. As it runs on an unstable nuclear fusion reactor with a containment bottle the size of house, and heaven help you if that get's ruptured.
It probably could be done with numbers, as Mobile Suits share a few characterstics with the Old Knight mechs from Epic 2nd edtion, and in theory if you had enough of them then it was possible.
It would be carnage. But still possible.