Yeah, as a guy who used dual throttles for years - I can tell you it does not help your turning ability one bit. It will help you roll slightly quicker and it allows you to execute cleaner hammerheads.
Because if it isn't perked then all the A-20Gs you see will have the quad 20mm cannons, completely drowning out the historically significant armament of six .50s. The Mosquito is not comparable as 100% of Mosquito Mk VIs had four 20mm cannons compared to less than 10% of A-20Gs.
With this analogy 3 * 20mm LA7 would be perked too .
Why?
Is that a good reason to perk the guns? The MA is not a historically correct arena.
I agree, but only for semi-historical arenas like the AvA and historical scenarios. The MA should IMHO be a no holds barred arena where only the unbalancing units and options get perked.