Hmm..
In my expeirence the 109g10 can almost turn with the LA7.
Seems to actually out turn it some times but depends on who is flying the 109 and who is flying the la7. (Note: ya wanna be REAL CAREFULL around Shane and those that fly the La7 like him

)
My answer to an La7 is to try to take em high! Same with the Yak's. Over 16k if possible. If they stay low it gives me chances to Z&B em, if they follow me up their preformance drops off some and you can get a small edge on em if you fly the 109 right. (Which is not something I always do well LOL).
109's seem to do everything much better with the addition of rudder to the given manuver. That is rudder seems to help a great deal with rolls and turns. Gotta watch the slats though! They can actually help your manuvers if you get the timing/speed right.
Can almost turn that baby around (a full reversal of direction) in it's own length under certain conditions.
I've also found, for me, the best escape/avoidance manuver with a 109 is to climb slightly using rolls and slight turns to avoid fire, and NEVER DIVE OUT of a fight, unless you have the proper conditions. In a dive your control is reduced, the faster you go the less control you have, so the Pony's and such will catch you, and you can't manuver to avoid their fire while they can mauver to get a firing solution on you! The 109 is small and these manuvers seem to make it hard for the E.R.I.T.'s (E.vil R.ed I.con T.ype's) to hit you.

Compression actually seems to occure at a higher speed then in AHI.
Was thinkin in AHI compression occured at around 425, while in AHII seems a little closer to 450?????
Recovery seems easier in AHII as well.
Also at higher alts compression seemed to occure at a higher speed. Like, um, oh let's say 550 up around 15k to 20k.
IMHO the 109's are Z&B vertical fighters and while they can do some turns your better off going to high yo-yo's, or roll's, or some such a manuver/combination then say a flat or horizontal turn. Spit' s, and Niki's, etc. can, and will, hand you your prettythang real quick if you try to turn with em!
When in nose down manuvers throttle control and rudder,with roll compensation from the stick, towards the high wing seems to work very well at avoiding over speed/compression.
Just my opinions here though LOL