I've cleared level 2 normal with a 700 score about 60 times give or take a few. I've gotten 208 tokens, 150 gems, 2 Lightbringer plans, and so many chips I want to cry. (about a 3% drop rate, compared to the assumed 5%)
If my score is going to hit 800 I will just go to the end and tank the score.

A plan drop rate about every 100 tokens worth of 700+ scores I can handle.