Hard to match the lopsidedness of Bane vs. Juggernaut. Never saw that thread, but it's hard to believe there wasn't some trolling involved there.
I've been known to post the odd deliberate mismatch myself, in order to expose the wrongheadedness of someone's position in a given topic. So for example, in respose to someone claiming the Silver Surfer and Thanos both had high-level physical super-speed, I once posted a footrace (from London to Paris, or something like that) between the Surfer, Thanos and Quicksilver. I listed four poll options, as follows: A) "Surfer wins", B) "Thanos wins", C) "Quicksilver wins", and D) "WTF? Quicksilver smokes these chumps!". To no surprise whatsoever, option D received more votes than the other three combined.