No and good luck finding anymore.......
I have looked and looked and thats the best I have come up with.
Like you I could hardly believe the roll rate, especially since the only other guage I had was comparisons against other 109es in other games.
However, the 109e is capable and with its good rudder authority its does "ok".
Urchin looked into this as well, his conclusion was the 109e roll rate was fine but that the spit roll rate was a bit high.
But theres no denying the "feel" one gets when rolling the 109e.