Shhhhhhhh!!!!!! Quiet!!!!!

Ki-84 ENY = 15
Spit XVI ENY = 5
Spixteen kills Ki-84 = earns 0.3 points
Ki-84 kills Spixteen = earns 3 points.
1.25 modifier to each if you land the kill.
I'm not a great fighter pilot by any means, but I've got decent scores in general from avoiding anything with ENY under 10 (110G), and usually with ENY's of 15 to 35, most of the time.
JimBeam has a point, lack of pilot protecting armor is the biggest drawback, IMHO. Pilot wounds take me out more than anything.
Like the Ki-61 too. Oddly, the Ki-61 is a decent GV killer with it's bombs and slow firing cannon, if you want speed on the deck. Hard to compete with Ki-61 in LW with splixteens and lalas everywhere, but there are a few that manage. And it's ENY of 25 helps to make it a perk-o-lator ride.