[Mobhack]

Gliders let you and a bunch of units all together in the one spot. para-trooping out of transports leaves everyone scattered, and troops on the ground can shoot the paratroops as they descend.

Air assaulting the AI is usually an easy win, as it is designed to set up for receiving a ground assault, not air. The paras and gliders are really only there for scenario designers to make balanced scenarios with. (Same goes for helicopter assaults in MBT, I dont do it as its another way to take advantage of the AI, as with ammo carriers).

If you are in fact playing as an air assault formation then you probably should make it more "realistic" by not buying any ground-pounder support as you are going to be way in advance of your front line troops - so no tanks, only air delivered guns and mortars and ATG etc. Then the AI will wake up when you take objectives and trundle at your light air mobile troops with its tanks, which are not being dealt with by any support tanks you buy.