I agree that the Hummer is kind of a heinous vehicle. but:
Real world the Hummer performs better than the CT best I can tell. Its not as fast but that's because of the massive weight differential from the 212 kwh battery pack. You watch videos of the CT offroad and it rides like a pile ogf crap with the air suspension on high, the one foot driving is crappy and will just start rolling randomly down hill, the traction control sucks, the motors get hot after only some mild obstacles. The hummers, on the other hand, seems to be extremely well sorted. The suspension and pretty much everything else seems to be superior if you arnt just look at paper numbers.
I also dont understand why you would say the hummer is a joke when it, and the Silverado EV with the same/similar battery pack, are the only ones that even have something close to a reasonable towing range. Throwing a huge battery pack is the only way to make these trucks functional at this point. The battery tech and charging infrastructure is not at the point where you can argue otherwise. Silverado EV's are getting 450-500 miles of range unloaded. How else do you do that at this point beside throwing a 200 kwh battery at it?
But you're kinda making my point. These trucks are dumb, at least for the purposes of being a truck. Im not saying I would buy a hummer, just that if I had to pick a $100k+ EV right now, thats it.
I'm not a fan of the CT at all, but to be fair, the hummer wasn't this well sorted out when it was released.