It's more than just grade of the climb. Other factors such as coming late in the round, is it an isolated incident, how tough a walk is the rest of the course, size and style of greens etc. I know it when play it. 1 at Painswick and 18 at Reddish Vale are OTT. I don't think Cleeve Cloud has any OTT climbs, but as a package it's a bit too much. Royston is out of control. Church Stretton unusually doesn't have any OTT climbs, but it does have a few stupid downhillers, the better of the two evils I spose. Welshpool is a bit more OTT than Cleeve Cloud.
But, my perspective is that TOC and Deal have ideal land for golf. Minimal elevation change, but humpty fairways which create the ball flight issues.
Ciao