Stuns aren't too big of a problem because you can predict when you will get stunned in most cases (Inara has wind-up time before she stuns you, Damba has a clear sound cue so you can predict when he will stun you., Ash ult gives you also enough time to react, except if there is a low ceiling above her, Furia beam, just do go into it, Vortex Grip, don't go close to Khan if you aren't sure whether it's on cooldown or not. The only stun I find really stupid is Io, because you can't predict when it will stun you, the dog can chase you down even if you are far away, and it's just really random and unpredictable, I think the dog shouldn't be able to stun)