I reported an interesting bug awhile back, and the updated version shipped this week seems to have fixed it. They had an unexpected and interesting explanation. The bug was this: in games that were predicted to be extremely close, like between teams that are 1 spot different nationally, the prediction percentages were weird. Like sometimes it would say that team A should beat team B 1-0, but also team A had a 37% chance to win, team B had a 39% chance to win, with a 24% chance of a tie. It didn't make sense. It turns out that since a tie is much less likely to happen than a win for either side, it would randomly choose one of the teams to be the winner, and sometimes it was the one with even slightly less percentage to win. That was a higher likelihood outcome than a tie.
They've decided to change the app behavior, so now it will be more likely to suggest a tie as the result (even if mathematically it should be significantly lower), and it will no longer suggest a winner that has a lower percentage to win than the other side. I don't think I've ever seen the bug prior, but I have come across it twice in the past few weeks - sounds like I shouldn't expect to see it again.