No.
Call quality is just as garbled and same dropped voices. Signal reception is better and bars equate better to dBm signal, but call quality still sucks big Oprah butt.

Seriously
added:
Not seeing how some of you are getting such high Quadrant scores unless rooted and overclocked with another kernel. I have used several roms and the stock kernels and never got above real low 1200's with a clean Inc and no junk on it. Even with Kings BFS kernel, I hit about 1250 and that is a more optimized kernel than stock. I average 1232 with a clean Inc. I test before and after loading a bunch of stuff to see if it impact performance. Does not seem to make a difference.
In fact, on stock kernels and Skyraider and Stock rooted 2.2, I average 1175 with no OC. King kernels and no OC I average 1233. I respectfully doubt such high scores unless an anomaly.