What is the most annoying with blitz is that you can be stun/freeze/CC during the animation and end up with the skill on cooldown doing 0 damage, which dont happen with SS.
To answer your question about which one have the fastest attack animation, i’am not sure, blitz is really quick to hit so Ceno could be right.
Yep, it happen more often if you do long distance blitz, but can also happen at melee range, especially in crucible when you are swarmed. Actually this situation piss me off, i wish devs implement CC immunity during blitz travel time/animation.
It is travel distance which allow you to dodge SS or blitz, basically more movespeed you have easier it will be to dodge blitz/SS, you can even miss your own blitz/SS if your target is running at opposite/diagonal direction (and also have decent movespeed).
If I remember correct, I avoid or break blitz and SS attacks from enemy heroes like boars, undead NB and Fabius by using Olexra’s freeze or by making movement tricks.
First part of statement is correct you can be CCed when you SS, but only when you appear from shadow (during hit animation time when you are on top of target, or on start before you enter shadows) not during travel time like its with blitz, and thus SS has much lesser chance to be CC interrupted.
Second part is not, SS is much faster than blitz when it comes to approaching target you can find theirs respective approach speeds on toll tip description.
To OP about actual hit animation times Im not sure which one is faster.