Meh, the spit16 is worse for high-end reasons. The Ki can beat most low and slow, but the spixteen can pull UFO moves in the vertical, climb almost 1000fpm more than the Ki, rolls like a 190, can dive with you, catch up to you in a dive, and...
I was zooming in at 500mph to the tail of a spit16. He was level, flying directly away. As I get to 700 he breaks up HARD, so hard I see him top-down planform as I blow past (I'd have had him if I wasn't in a K-4, stupid 30mm) he pulls this 6+ G completely vertical loop, comes around, and levels out, and CATCHES a 109K-4 doing 500+.
THAT is why the spit16 needs to be perked.