hard to say it in those terms. imo (and they may vary) in terms of pure skill he...isn't great. certainly below guys like daredevil imo. i dunno. h2h i could see him being a good match against someone like punisher maybe? karnak just doesn't have a lot of feats and no real wins against any of the big guys. kind of the opposite actually--he usually gets his a$$ handed to him....
i've not read the very latest avengers, but even if that is true, daredevil has taken it to the avengers and breaking sh!t is what his POWER is. finding a weakness in a structure is....what he SHOULD do. hitting a high level street guy/ma guy? wayyyy different and it's been shown that his skill level doesn't match up.