Ha I think I started a thread once about inverse risk/reward or whatever, and mathematically we can't say it's any better or worse than a standard R/R. But you should absolutely be aware that anyone can hit huge numbers of small winners in a row by taking huge risks. Its just eventually the big loss comes in. I'm not saying thats a negative per se because the person could still be well in the green when that big loss comes, but a high win rate is a given and means nothing until you see the PnL after a few inevitable losses.
It's kinda like the difference between buying out of the money options and selling them with no edge in either. In buying them, you lose, lose, lose, lose and then hit a big winner ( which may or may not put you in the green). In selling them you win, win, win, win and then take a huge loss (which may or may not put you in the red). Neither is better or worse than the other per se, but you shouldn't take the high win rate as a positive all on its own.