That's why I said you should send something in that actually threatens it out.precisely how many EQs can kill aegis in shield form though?
252 Atk Landorus-T Earthquake vs. 252 HP / 0 Def Aegislash-Shield: 252-296 (77.7 - 91.3%) -- guaranteed 2HKO after Leftovers recovery
252+ Atk Mold Breaker Excadrill Earthquake vs. 252 HP / 0 Def Aegislash-Shield: 260-308 (80.2 - 95%) -- guaranteed 2HKO after Leftovers recovery
252 Atk Mega Metagross Earthquake vs. 252 HP / 0 Def Aegislash-Shield: 168-198 (51.8 - 61.1%) -- 96.1% chance to 2HKO after Leftovers recovery
While he certainly isn't shrugging off these hits, he's certainly not dieing to them. It's actually really really hard to kill aegi in shield form.
Any mon you send out to kill aegislash should do so with the expectation of having to eat the shadow ball + shadow sneak combo in return (at a minimum. Ideally he should be able to stomach a subset of his coverage moves as well). Otherwise aegi will live, and you will die, which defeats the purpose of revenge killing.
If we are still talking about revenge killing then Aegislash wouldn't be at full health anyway since it probably needed to check something already leaving it in kill-range for all them.
If we are really assuming that Aegislash is at full health, then we have a totally different situation: Does your opponent need Aegislash? Excadrills Earthquake nearly kills it, which means it is unable to check your Lati@s if he really decides to stay in. If I would need my Aegislash, I would still switch out despite winning the 1vs1 situation.
This is why I am tired of seeing these stupid 50/50-arguments. They are most of the time out of context and in 1vs1 situations which are obviously in favor for Aegislash. In a real battle you will rarely be in these kinds of situations, so this is a very poor argument.
Bisharp forces 50/50 with Lati@s because it can kill it with Sucker Punch or Pursuit if it switches.
252 SpA Life Orb Latios Hidden Power Fire vs. 4 HP / 0 SpD Bisharp: 229-270 (84.1 - 99.2%) -- guaranteed 2HKO
As you can see, Bisharp can live an attack if I mispredict and used Pursuit instead of Sucker Punch. He now has to win the 50/50 a second time to escape, while I only have to win it once to be victorious.
I really hope that I don't have to explain why every good player would disagree with me on this situation I described here.
252 SpA Life Orb Latios Hidden Power Fire vs. 4 HP / 0 SpD Bisharp: 229-270 (84.1 - 99.2%) -- guaranteed 2HKO
As you can see, Bisharp can live an attack if I mispredict and used Pursuit instead of Sucker Punch. He now has to win the 50/50 a second time to escape, while I only have to win it once to be victorious.
I really hope that I don't have to explain why every good player would disagree with me on this situation I described here.