Another thing I noticed was,
 Typhoons, due to the might of pure, raw power of acceleration 
 out turn planes with average turning abilities in the long run. 
 It seems to me like a classic case of bad sustained turn angle, 
 but good sustained turn rate.
 There was an incident with me in a 109G-2 engaging a Typhie, and
 judging from the guy's flight patterns, he was pretty much a newbie. 
 Being at an disadvantage, I was able to blow his E and got to a point
 where we ended  up in continuous turn, each after the other's tail.
 At first, I thought I was winning. G-2 is the best turner of the G series
 109s, and though not as fabulous as Spits or Zeros, it has a average
 and decent rate of turn. 
 It really seemed like I was winning this turn fight, and just a few more
 circles and I'd finally close upon the Typhies tail enough to get a gun 
 solution.... but after this point, my G-2 was able to sustain the angle 
 of turn, but the turn speed began dropping. The Typhie, who seemed 
 in whole lot of trouble when this first began, was quite obviously doing
 nothing much but ramming up the WEP and pulling the stick as hard as
 possible without stalling. 
 With dismay, after the critical point, I slowly began losing the turn fight, 
 and finally gaped in disbelief as the Typhie got onto my 6 and shredded 
 the tail section with Quad-Hispanos.  
 I had this same thing happening when I was in a La-7, and the enemy 
 was in a Tempest. Same situation, same results. "Just a little bit more..."
 .. and after that point, the La-7 loses ground, the Tempy monster keeps
 up the turn and latches on to the tail of La-7... and BAM! End of Story.