Despite having used 'both' for over 20 years, there is still the same questions......?
As a TT'er I used expensive tubs..... talking Wolber Profil rims. 19 mm Tubs at 150 PSI ...and trained on Mavic rims and Mich Axial...or what ever was the old Pro tyres.....
TBH not much difference.... dunno, because Cheshire roads are 'orrible....... and rough.
For every day.. hp/open/normal/tyres.... quality then you pay what you like...
Race etc..... dunno really..... I think clinchers are pretty darn good now, Michelin said they were better 15 years ago........ only point is pinch punctures.......... (same argument 15 years ago).......
Top 'clinchers' vs top tubs is close....... but heavy duty tyres vs race tyres..loads...makes any bike go better........
TUBS are for races...........