leap slam sweep and stun?

high guys im just wondering does stun really effect leap slam and sweep that much? Because im thinking of making a really high 2h mace stun build so if i just go around leap slammin on a group and then sweep them will the stun effect be high because of the talents ive picked?

noobie question i know but it doesnt say too much in the tooltip about the stun properties of either of these 2 abilities.
if someone could clear that up for me then that would be nice