I think the better route would just be slow the AI down a little at the start. If they were promoted a little slower (though still automatically), it would give you some more time to prepare. Besides, if you build enough to stop the drop attacks, you'll have nothing for the normal ground assault. Also, I feel laser general is one of the worst generals to play against the AI. He's too handicapped at the very start to compete with how powerful the AI is (just pumping out units at an...insane...rate). This isn't to say he's not balanced to the other generals, as his cars are fast enough to be a good scouting, ground control and harassing squad. Those tactics, however, are useless against the AI.
I'd suggest trying infantry general, and getting out minigunners and tank hunters in bunkers and your powerplants as quickly as possible. With all that you may stand a chance.
True... garrisoned laser missile troops work pretty darn well though, and the laser gen's late game AA units are devastating. But I agree, early on he's pretty weak.
Those minigunners are monster AA units though.
The Insane AI was specifically designed for challenging CoOp play. The Balance for a 2 on 1 match is just right with Insane Robot general. 1 vs 1 should never win vs an Insane AI.
When Drake and I play we usually would start with a 2 on 1 vs an aggressive, just to get warmed up and get a feel for the map and the units... we know we're going to win, this is just practice. Then we play 2 vs 1 with an insane. then 2 vs 2 with aggressive. then 2 vs 2 with 1 aggressive and 1 insane.
I understand that, and I suppose I got myself into this bad situation. I actually built a little experimental map just for... experimenting. My base is on a little island, with an indestructible bunker guarding the only entrance to my island, for fending off the initial waves of ground units. The Comp players get tons of oil derricks, which I suppose let them unlock tier 5 powers VERY early on. It's great for having fun with some insane tank gens and testing out factions against a massive wave of tanks, but the AI gen's powers are just to powerful early on. Like I said, I couldn't even defend myself from the air-drop powers without worrying about ground attacks.
Still, I think the insane AI should gain ranks at a slightly lower rate. Money cheating is fine, but those powers are just hard to defend against.