The F has typical wing loading (if has a different wing to the E but it was still a good turner) but as I say, a very good power to weight ratio. The G's are still good knife fighters and the G2 is pretty hot.
Probably the most comprehensive details anywhere, net, book or otherwise on the 109 are here:
http://www.kurfurst.org/
The 190's ability to turn tight in the first 90 degrees at high speed is the reason why the 109's can't, the stick force needed to move the elevators at those speeds.