Mitsubishi G4M "Betty" was not a carrier based bomber. It was a land based, twin engined medium bomber.
The Japanese equivalent would be the B6N Tenzan "Jill".
Britian is misspelled "Brittian".
The N1K2's ENY is out of whack with the other perk units.
The Ki61's, P-47D-11's, Hurricane MkIId's and Fw190F-8's ENY scores are, like in the MA, completely out of whack with their capabilities.