Im usually the only one to give actual reasons, and I rarely break it down to match ups because nobody should do that except the op.
Yeah, I'm biased towards Marvel but I try to not let that effect my decision. Ibagree on the Quasar, Nova and Ronan part, but they have some useful abilities like force fields and such that will let the two offensive powerhouses with aoe attacks get some shots off (Surfer and Bill) that would be devastating to any team. Surfer and Stormbreaker can do some serious damage when going all out.
I really dont remember much from Captain Atom, so not sure where to place him but I know hes pretty powerful. My only thing is, there is no stomp here, people saying its a stomp either way is silly and nobody on DC side gives a reason cept "flash blitzes". But thats pretty much the anser on any JL vs.match. i lime to use my imagination every once in awhile but whatever.
Quasar had a pretty good showing I believe but I think it was a different one. A chick I believe though.