"Just because Moto2 uses a spec ECU/sensor package supplied by HRC, doesn't mean there are no electronics"
I was comparing late era 500 pace when they had that benefit too (albeit in its infancy)... go back a few years to when you're referring to & it gets worse.
"130kg, 190bhp 2T 500's were slower and easier to ride than 150kg, 130bhp 4T 600's?"
Slower?... back then yes... the 600s on standard race tyres are often faster than the 500s on overnight special qualies of 12 years ago... & as I said, that's with Moto2 riders on...
"I get the impression Hedgehog5 is suggesting Redding, Rabat & Espargaro are better riders than Rainey, Doohan, Schwantz & Lawson because lap times are similar 15 plus years on?"
No... the opposite... I said the 600s were as fast as 500s (with the primative electronic aids of the day) with just Moto2 riders on board... the best of the best would be even faster putting the old 500s even more in the shade... don't you think so?
Maybe that gap could be made up with frame design, & maybe today's standard 1 make race tyres are better than the overnight qualifiers they used to have made to suit each circuit/bike/rider 12 years ago... but that would make them as fast as their support series... wow. Effectively you could group them all together in one series & it would be closer than the CRTs are to MotoGP.