[Imp]

For vehicle transport weight is a big factor certainly with regards to air but size is also a factor. I say this only as because of the Leo mentioned previosly, not only is it heavy its quite large to boot. Also as mentioned would it effect most people as you tend to spread your heavy/expensive stuff about. If I had a tank loaded might put a jeep truck APC on with it but I dont want to lose 2 tanks to one sinking. A few loses like that & its going to be hard going once land is under foot again. Besides no matter what you do it will never be precise enough to reach real world situations, some combination will fail the test.

From a quick look its listed carrys per sortie are
1 MBT
4 LAVs or AAVs
13 Hummers
So if did Hummers right loads of things could carry them