Cradily is such a fucking beast...it can wall almost anything without Close Combat indefinitely. Normally, you wouldn't want to use Resttalk if you have instant recovery, since it's...well, instant recovery, but having a way to get around Toxic users is convenient. You'd better have some other premier offense in your team if your going to run the risk of Resttalk at all.
Also: this is Pokemon, we've been making up our own terms forever. Arguing about its inherent meaninglessness amongst ourselves now is even more retarded. Either go with the flow or move to the beat of your own drum. Crashing against the waves is just futile.