Give diamond blades some time perhaps they will amount to something but right now there still new and relatively untested hardly something worthy of the title of the toughest knife ever. They still have a long way to go including being Nossed. Busse's on the other hand are just the opposite tested tried and proven, and the I believe the toughest knives ever made.
The proof is in the pudding and right now Diamond Blades bowl is somewhat empty.