Talk:VPBE/@comment-24951773-20150529114419/@comment-3974211-20150530035612

I think a fully charged Janna's Q and maybe one or two ultimates have a knockup duration exceeding 1 second. Most are 0.75 seconds. They are shorter than virtually all other forms of crowd control, even factoring Mercury Treads (i.e. only champions like Trundle or Irelia can say a stun would be shorter).

As for your examples of "don't make sense" - I disagree. Maybe the decision to add an airborne to their kit was bad - but it makes visual sense, which is what Riot is going for (Zyra's roots root you). Kalista is throwing someone at you and you stumble back; Azir is pushing you away; Vel'Koz is causing the world to break up beneath you; etc. Yes, they could have been given a different CC-type (Kalista could drop her ally on top of you and flatten you instead) - but different CC types would not make sense without also changing the ability.

It's unfortunate but "stumble" is the most applicable reaction to most crowd control applications - i.e. a knockback. Look at Quinn's Vault.