They are totally different knives, so it depends on your needs.
This one is really a bushcraft knife. Relatively light and nimble. It's designed for bushcraft tasks, ie., carving and whittling wood into useful items for outdoor use.
Think carving tent pegs, toggles, notches into wood to loop cord around for traps, or to hang things off of, like the bale of a pot over a fire, carving spoons and other tools out of wood, etc.
The BK2/22, on...