I did find it funny that on Grizz's diagram the B-239, which turns as well as the A6M3 while having much better guns, being much more durable and has much better high speed handling, is rated so much farther from "easy mode" than the A6M series.
There were a lot of things on his chart that I disagreed with, but a lot of this is personal opinion, so it is hard to discuss and reach an agreement.