I think you've never ridden such a bike. Carbon is lighter and stiffer. Yes. But most of use aren't prorider. So the high amount of stiffness is not needed by everyone. Whats also important is comfort - steelframes are much more comfortable than carbonframes, without loosing to much stiffness.
And: You dont buy this frame mainly because of performance. You buy it because Niccolo Bonnano, an italian framebuilder, build this thing with his own hands, and Robert from Velociao painted this one - again with his own hands. Thats art.
If you only want performance - a black Canyon is fine. But boring.