Not all planes have same accuracy of their guns. 109, for example, can hit much further away than 190, compensating for its poor punch.
Hit % is a can of worms, you have RoF, v0, placement of guns, convergence issues, bullet drop - all lumped into one number. And pilot skill, of course.
If one flies c.202 with nose guns only. In those rare ocassions he bounces someone and stays on his six, firing. He will have quite a hit %.
OTOH, you have a guy in 190A-8, having to stick to snapshots. Most of rounds fired miss, he has to put a bullet stream for enemy to fly into. Even with practice, a lot of rounds are wasted.
As for shooting goes, you'd agree that hit % has little to do with what actually goes on in the air.
One of the prime example was Torque. You'd all agree his shooting was amazing. Yet, he always had what, 3-5 % !