There had to be a reason why Kevin Feige (and, in extension, Marvel) decided not to attend this year's San Diego Comic Con, probably the biggest and most well-known convention about movies and such in the world.
Leaving aside the fact that this will give the main competition a chance to shine (yes, DC will attend the SDCC, with plans to release new clips for Batman v Superman: Dawn of Justice and a first look at Suicide Squad), can you imagine of a reason why Kevin Feige decided this?
Well, here is the simple answer!
Kevin Feige talks Marvel's absence at SDCC

Last year, in October, Kevin Feige revealed Marvel's plans for the next years. And these plans included all the movies that Marvel will release in Phase III, culminating with the Inhumans movie, which will be released after Avengers: Infinity War Part II.
And this is the reason why Kevin Feige decided against attending this year's San Diego Comic Con: "It was just timing. We had done that event in October, when we announced so much. Everyone knows what we’re doing over the next few years. I really have a belief: If you can’t go to Comic-Con and over deliver, then don’t go." (via Comic Book).
But is this a good enough reason?

