i think some of you guys are overthinking this. its possible, but it would take a pretty impressive level of incompetence for those % odds listed to be inaccurate. its clear the intention is for them to be accurate, and its easy for them to be accurate, so what is the concern?
i am definitely one who might have questioned this at one point, but it would be to confirm an expectation, not because i had a handful of bad battles. and it would take probably a half dozen or more coaches reporting their odds and the winner, i suspect by ~100 battles you have enough to draw a best fit line which should be pretty close to what WIS is saying. or not, if its wrong, i suppose.
its not that hard to do, about 5-10 of you skeptical folks should get together and do it - ill even join in if all i have to do is report my battles - but you'll need odds of winning exactly, this better than or worse than 50 stuff doesn't come close. not positive 100 battles is enough, its just my off the cuff guess, it still could be influenced by luck for sure, i feel like you'd really want more like 1000 to say with a high level of confidence what is happening, but if you run 100 and its fairly close or way off, it would be pretty interesting at least.