Bab, I don't think that would be the reason. While HTC might use weights, power, balance, etc... the main difference (the wings) is something where HTC models airflow over all parts of the wings in great detail. They don't just plug and play wing values. So theoretically even if they got the C mixed with the H, it would be C stats with H wings properly modeled. I don't think that's the case, as the engines were different and you would notice it more readily.
One thing I did note, and I had to double check... The link posted above to the previous post on 152H weights is interesting. I read it, stopped, re-read it, and had to check the accuracy of those weights. Empty it's the same as an A8? This got me looking and I noticed something else.
According to this:
http://bbs.hitechcreations.com/wiki/index.php/Ta_152HOur Ta152 is 11500 lbs (see charts halfway down the page). That's 5227kg. About 1000lbs more than common values for the Ta152H based on a half-dozen other sites I checked on google to be sure.
There are 2 different weights that keep popping up:
Loaded weight: 4,625 kg (10,470 lb)
Max takeoff weight: 5,227 kg (11,501 lbs)
To me max takeoff includes external stores, such as a drop tank. Separating "loaded" from "maximum" to me means clean vs loaded.
I'll need to check offline with the E6B to compare. Does anybody recall off the top of their head anything about these 2 different weights? The plane should have 277 gallons internal, of which 157 is normal fuselage stores and 120 is in the wings. That's 1662 lbs (per AH modeling 6 lbs per gallon). To shave off 1000 lbs you would have to remove 2/3 of all the fuel, so that doesn't make sense. I can see not loading the wings, but not loading the wings AND not loading half the fuselage? That's a random/arbitrary decision. I wouldn't expect that this 1000lbs is simply flying with less fuel onboard...
This is a tangent to the handling issues, I admit. It does relate, however, to the generally odd modeling of the FW series in this game.