206 wing is hi lift - 210 wing is high speed. (Especially in the strutless 210s - which I think is the G model and later)
That's what the marketing guys at Cessna wanted everyone to believe at the time. Someone at Wichita thought that the strutted 210 looked a bit dowdy sitting beside a Comanche or a Bonanza. So the strutless 210 was born.
It was 90lbs (that looks and sounds so much better than 40Kg) heavier and went 2kts quicker. High speed wing? Sorry, but no.
but the couple that I have flown most recently were SLOW compared to the V35B. I have never caught ATC off guard with a burst of downhill speed from a 210 like the Bo turns on
Sorry to burst your bubble FDK, but a 210 with a 550 bolted to it drives right on past an A36. The A36 I fly trues at 173kts. The 550 210 that I've driven was 5 to 7 knots quicker than this with similar loads.