Why such vitriolic bickering over such an arcane and subjective point? You can't compare extreme boulder problems to hard long routes, hard sport, speed mountaineering or solos. Dave probably wasn't thinking in terms of all those disciplines when he said "top five, maybe", but on the "climbing" he has focused on. For a while he was arguably part of the top few in bouldering and sport climbing, pushing the envelope pretty hard. He is also a good guy and fun to be around. Goofy climbing videos aren't really great for getting an accurate sense of someone.