No, having a different steel doesn’t justify getting one. That comes from want, and why not have another CRK in a different steel.
There’s always going to be a trade off, so, for a higher hardness you give up some toughness. That’s going to depend on the work you do with your knife. From my use, I’ve chipped the edge of Magnacut doing the same thing with S35VN which hasn’t chipped. As far as edge retention, that’s going to depend on your sharpening skills and what you’re happy with when you sharpen your knife.
This is the way I look at it, with regular use, a knife is going to get dull regardless of the steel. Is it worth it to me to get a few more cuts, not at all. Is it an excuse/justification to buy another knife I don’t need, hell yes, and that’s why I’ve got a couple in Magnacut.