I think that was a successful coincidental effect. No paradox backlash for that comic strip, im my opinion. I've seen plagiarism before right here on stripcreator (i.e. SC people taking from other strips, as opposed to the other way around), and it's seldom so cleverly concealed.
Of course, the real test would be to see if all the strips by that author resemble a stripcreator strip. Then we would have the first ever recognized case of a published cartoonist ripping off a stripcreator.
I've accidently "plagiarized" others once or twice. Someone once said there are really only seven stories that can be told; the rest are just variations on a theme. Maybe there are only seven comics as well. Very rarely is a gag so original and clever that nobody else could possibly have thought of it.
--- I was gonna send a robot back in time, but I got high.
I'm pretty certain it's a coincidence, I always was. I've ripped off so much material I ought to have my own legal department; but never other strippers without acknowledgement.
Also, I read the Comic Competition thread in kaufman's previous post; it was bloomin' marvellous it was.