imho a6m vs hurri1 is still a bad match. Cannons + Climb + Fuel Injection > 8 .303s & a carb.
As for turn rates, it seemed like every time I merge'd with Oldman, it'd come out roughly even. Once we go into flaps, he'd have his 1 notch down, and I'd be down 3, and starting to reel him in. Once I got into 4 or 5 notches, it's just a matter of time. Hurri1 just doesn't have the power to get away once its deep into the turn-fight it can't really win.
The only thing that keeps the relatively small turning difference from being the end-all-be-all of the AvA is the fact that people are likely to jump into the fight, and 1 vs 1 isn't very common (at least not when I'm on).
That left a6ms turning, covered by cannon armed and very capable 109s, and sometimes the heavy cannons of 110s against slower, less-turny, poor-climbing, under-gunned Allies.
Allies don't need something that can neccessarily turn or climb like a Zeke, but they definately need something with some cannons.
that's just my 2 pennies