don't and will never do those things. But if they are GOING to write a cursor because that is all they know then knowing that fast_forward is faster than dynamic or that CLR (if they work in that) is faster than TSQL in some cases can make an improvement in their abilities that is...
My question would be, if you're interested in performance, why would you use either? The tired old saw about people not being able to think of set based solutions either because they can't, won't, or simply don't have enough time because of some insane schedule just doesn't hold any...