THis part I must disagree with. Both TOny's have gone against the backs of their respective verses/not told them things to do things on their own. And despite this, both somehow convince the other heroes that they have to/or just to fight their counterparts.
Why would Fury, Cyclops, or anyone just follow TOny's idea after the many bad ideas he's had before? And if both TOny's did manage to convince the others, then they just convinced both sides that they have to punch each other to decide who was right which will result in more casualties and property damage than when the Ultimate!Hulk caused earlier.
Granted Doom could just be screwing with everyone but this just sounds like poor planning and execution in the excuse to have a big brawl aka Civil War.