Originally posted by "Id"👆 The writer explained this and what if's are what if's. It's already been made crystal clear you are 100 percent correct. I wouldn't worry about those who argue for what if's to be considered canon anyways.
Simple.Prior to that What IF, there was no indication to suggest Sentry taxed himself in killing Ares.
Its clear that What IF Siege, is using the death of Ares as a plot device to push the development of its story.
To make matters worse, the reason for his defeat is clearly addressed in the comic, and the proceeding interview. Which goes against this What IF story.