Yeah, I realised something similar with my last minute testing. Once you make a good enough bot, which can be done with like 6 cards, it's really easy to beat all 3 bots with roughly the same stats. Probably good for the jam, since it makes it a lot easier. But I've already though of some better ideas which should be more fun and challenging, but it will require a bit of work.
I think you're the first person beside me to beat all the challenges. Thank you!