I wouldn't go that far yet... True, the 2-strokes have been lapping a bit quicker than 4-strokes on most tracks, but the RC211V has consistenly put up quicker lap times than 2-strokes (recent IRTA test at Catalunya).
Capirossi came within .2 secs of Rossi on the last day, but Rossi and Ukawa were pulling at least 1 or even 2 seconds over the field for most of the weekend testing.
Also, the GSV-R with Ryo were clocked at around 310 KPH, which is nearly 193 MPH (word has it the RCs were clocked at 322 KPH - making it at 201 MPH - *can't remember source* but i'm not sure to believe it).
Since those bikes are in their infancy stage, my 2 cents says that once the 4xers sort out the gremlins, the 2xers' will be stomped into oblivion.