...Seems too that most only use the bikes at barely mid range speed or into town and for few kms, hence the perception that the single carbs are better..
I mostly use my singe carb 750 for fairly high speed (80 - 85mph) cruising for hours on end in France with occasional 100mph+ overtakes. Not exactly 'barely mid range speed or into town stuff. I find it performs excellently and gives great fuel economy too. But if anyone chooses to disbelieve, its no skin off my nose.