I've been flying P51 pretty much in AH1 with some success, and I think AH2 one is way better: same high speed maneuvrability but much better dogfighting capabilities: it can outmaneuvre Yaks easilly, which was very hard to do before (given equal skilled pilots).
And, of course, excellent .50 lasers.
As for shooting distance, no change for me: I've been always shooting from 200 yds-, even when B&Zing at 500 MPH.
The new rudder response also allows more extreme maneuvres (barrell rolls, rolling scissors and hammerheads especially), if you're skilled enough to control the plane on the edge.
Moreover, the new icon system greatly helps in B&Z, since the attacked plane (spit for instance) will not dare to follow you up in the zoom not knowing the exact close up rate. And anyway he won't be able to wreck you by emptying his ammo load while floating 1k yds under you, as too often happened to me in AH1. At least this is what i'm experiencing.
Outrunning the enemy is also much easier because when you get over 400 yds distance some smooth movements are enough not to get hit, even from hizookas, making the run much safer and effective, when necessary.
As for B&Z VS T&B tactics (I play both, depending on my mood and fighting environment), I can't see much difference between AH1 and AH2. It actually seems to me that more technical pilots are advantaged compared to AH1, whatever the tactic employed: ACMs are much more critical now.
I really can't understand pony drivers complaining.
Best regards
Promet