Freelancer Gets Fired - Accused of Plagiarism

Here's the cartoon published "before" and then one created by the freelancer "after". What are the odds that two people could come up with the same kind of placement and concept and similar captions at same time?

Caricature/Cartoon Weasels

Tom Richmond writes about his spotting his work out and about. Only problem is others claiming it is theirs.

Weasels. It's unethical and it's ripping off a fellow cartoonist.