Just looking back at the thread that sparked all the recent discontent re: Peg vs AOne.
How about having a well balanced document they can be referred to?
(well balanced is possible, I've seen people take lots of effort of writing responses to the 'Which one should I get?' threads)
Then, if a genuine returning user asks this question. someone can refer them to the document. If its someone trolling, well they can also be referred to the document and their trolling has been futile.
I personally don't know enough about the two platforms (three including AROS!) to write such a document, but I'm sure it can be done!