In order for MOS to-as you put it, destroy and making MCU a non factor-a couple of things needs to happen.One, the movie will do something that breaks new ground,like the Avengers did with combining five different franchises and starting a coherent movie universe, and two, it needs to make more dough than the Avengers, practically making it either number one, or two most succesfull movie of all time.So let's say, more than two billion dollars on profits? THAT would make TA and MCU in general a non factor...
In short...not going to happen
In other news, i do think that you guys are under predicting this movie.Comparing it to other reboot such as BB and IM2 is not really a good comparison. Those two movies didn;t really had any big names attached to it.Big names like Nolan and Snyder. Even the most casual movie goers will recognize Nolan as his name is now synonimous with the succes of the bat franchise. Same can be said about Snyder. I do think that people still remember 300...
On a more personal note, i think MOS will be one of the better CB movie coming out this year...and this coming from a hardcore Marvel fan.