Modern lethality

[MCab]

This may have already been discussed, but I have one issue with the MC's:  it doesn't seem THAT more lethal than WW2.

When a company of M1's attack a T72 Bn, I have a hard time believing that within a 2 hour turn only 2-3 Soviet tanks are ko'd.

Also, air strikes don't seem that decisive.  I've called in a strike of A10's on a tank unit in column, and get like 2-3 ko's. 
To the vets and historians out there, does this seem reasonable?  If not, is there a way to increase the lethality?