If you are ok with discarding your KNC product in a couple of months after purchase, then go for it.
That's going to be mostly true of ANY bitcoin mining product, including yours. It's likely a KnC will mostly pay for itself before your chips get on the network.
I expect my B2 Avalon won't be doing much a few months from now either, but for now it's quite nice.
It would be like AMD saying.
Our 9970 GPU will have a largish amount of transistors and moreish than 5,000 TFLOPS in OpenCL performance and TDP will be 100W to 1,000W or so. Oh and it will be one of* the most powerful GPUs in the world.
Lol
Anyway, I like this guys attitude. Nothing wrong with being confident, they certainly have the resumes to back that up - we'll see if they have the ability to execute as well.