The handle doesn't make it "look" bigger, it makes it bigger. And the body itself is almost always thicker as well, which is simply a result of the round design. I'm sure you can find some CCS plug that has a bigger casing than the smallest Chademo plugs along some dimension, but that doesn't change that just about every Chademo plug you encounter in the real world is a big and heavy beast, handle or not.
Neither CCS nor CHAdeMO are nearly as elegant as the Tesla connector, but surely, we can ALL agree that all 3 are night and day better than this!