I'm pretty bad at this! I understand (or I think I understand) the best strategy is to find a stand which just barely beats your opponent in most categories so you can manage resources correctly. I'm not always good at doing that, I see a lot of numbers and after a bit I feel "this is probably fine" and then lose. :D
The first time I played went to a third round where I lost in the very final. The second time I lost in around two and then, sheerly by luck, I won my third attempt in the first round with four victories in a row.
I can't offer much in the way of feedback! Everything works well, it's a game of luck mixed with strategy like cards are generally intended to be. You could, perhaps, make the 'spin' for comparing categories more dramatic and flashy with slot machine visuals or sound effects?
Or, if you wanted to get really crazy, you could show the various stands 'fight' based on the category result, like a larger stand stomping on a smaller stand. Which would take a lot more time and I wouldn't recommend trying during a game jam's time frame. :D