I've only tried kitty dru and hazz when there was downtime during a large patch last expansion, neither really stood out to be compared to the dps I was getting out of superbad. I have tried Tuhana's back when he first made it, and again later on for comparison's sake, although both times it fell quite short of what I could pull with the alternate cc. I do own a couple of Tuhana's other cc's (paid) from when I raided with them during mop and I think they work fairly well. There is definitely enough customization he includes for the various classes. If I had to point to one thing however, it would be that a developer that spends his time perfecting one class versus spreading his attention trying to keep up with every class change and every spec, cannot maintain the same level. So if what you want is the best cr then I would go with Superbad. Specifically there isn't a exact number of reasons as I believe both to have options to tweak and tailor it to the users need, but I suppose I would say Superbad is simply coded better.