Absolutely nothing and everything. <img src="/images/graemlins/grin.gif" alt="" />
You can read about the RSK MK1 at
http://www.equipped.org/rsk_mk1.htm.
If it floats your boat, great, if it's not the sort of thing you would find useful, that's OK. too. Knives and sharp stuff are extremely personal items. I, personally, don't find a Mora satisfies my needs, but there's nothing partcularly wrong with it if you want a small, relatively thin fixed blade without a substantial guard and what I find to be an insubstantial, not particularly ergonomic handle. I prefer my folders and fixed blades to have a more substantial handle, more substaintial guard and more substantial blade. Some folks prefer an even larger fixed blade, a la the BK&T line, and the RSK MkII/BK12 is designed to satisfy that person while still keeping to my blade design philosophy. Knives are all about "different strokes."