In reply to webbo:
There are, certainly. My point was that there are less of them.
Have a look on UKC at any major venue, then look at the stats, set it to bouldering and look at the distribution of grades. I’ve just looked at Plantation, The Roaches, Almscliff and Caley and there are generally less than half as many 6C+ than the grades either side.
I put this down to an anomaly in the grading but the upshot is that if 6C or 7A were your target, then you have around twice as many problems to go at. That would give a climber more chance of finding one that suits.
It’s also true of 6A+ and 6B+.