Hey, not being debuffed is amazing. But this isn't immunity, and it simply isn't worth the loss of damage output even if it was. Unless you're literally fighting Medusa-like content.I haven't looked into how the scoring works at all, but I'd assume that you get your top score, and that's your score. And what does by far the most damage over a time period of 15 turns? Michael AW with Fluffy.
You simply cannot compete with people who do one (or more) full Bursts than what you did, even more so if you don't have a P2W Eidolon and they do.