User blog comment:Khaladar/The Bonecrusher/@comment-24.190.81.23-20120607214635

V1 does not work because of the chance factor. RIOT has been moving away from random things, such as dodge. Two situations, either the stun is instant on first hit, or doesn't proc at all. Either doesn't really make sense, which is why the second seems more reasonable, purely in terms of the stun