This is a terrible argument. A buff to one unit in one faction is not a reason to buff a totally different unit.
I'm not even sure if I'm against a buff, but you are going to have to do a lot better to convince me then that.
Well, what about the fact that the AA halftrack is pretty much hard countered by UKF's t1? Or that riflemen being much stronger now along with cons makes the AA halftrack pretty moot when it comes to a suppression/damage platform.
Not to mention its setup/de-setup time often gets it killed if you don't have its vet 1 ability in time. Maybe it's the change with soviet T3 as well where you can expect a quick quad/su76/t70 and an AA halftrack rush is pretty sucky against any build that rushes the soviet T3. Or that most people go captain to stuart with USF so the stun shells is all one really needs to destroy it as well.
It just feels like a unit made for a different time that can't adapt to the current meta at all right now. Hence a price decrease of 5 fuel to match its current performance would do.