I must say, the 109 does seem to have alot of problems. The G14 does have mainly top speed problems... I myself love to BnZ, thats my favorite style by far, the old 109s were great BnZing machines, but the new ones are junk. I've pretty much always flew anything that loops well, the 109s, Spit14, Ki-84(My favorite), the P-38 ect, but the 109s now have such turning problems that there almost impossable to aim even in the vertical. They have great climb and zoom climb, but that lack of turn rate really hurts.
It is said that the 109 had some turning problems in the later models do to the lack of wing area, with an increase of almost 2,000 pounds and no increase of wing area will destroy your turn rate, easly! Though the huge increase in engine power helped, it didn't seem to help enough.
As said above, I've also read that the Germans main problem was the Allies numbers, and in the end thats how they were destoyed, a country the size of Texas can't take on two of the largest countries in the world for very long (Russia and US). The US started detaching the bomber escorts from the bombers, when the German intercepters would up from there bases the escorts would often leave the bombers and attack the fighter, even after the Germans would halt there attack. They were in the end almost purly hunted down till there was almost nothing let.
What gets me is there was actully still enough aircraft to defend Germany, they were actully running more out of people then anything else.
So basicly, I'd have to say the 109's and 190s really are having trouble keeping up, this isn't anything new, lots of people have talked about this and HTC has even said they'ed fix some of it like the G14's top speed. But your best bet for now is either switch to another ride, wait for the new patch and hope, or go to a different game like
Target Ware ! There modeling and engine control is very realistic, take off is a little touchy but it's still a beta.
Edward