Perhaps clone is the incorrect word...he's not exactly that and he's not exactly the original either, and plus he's never faced this many opponents at the same time before, and as you mentioned he's facing a much more seasoned Superman. He's still better than what we got in the show
I do like the fact that Clark is realizing his mistake with him though "I should have buried him deeper." Once again Q touching on flawed elements from the series and dealing with them in the comic. I think beyond all the arcs, I think this is what I love most about the comic.