But wait... the Initiative was a bad thing, as it left us open for the Skrull Invation, wasn't it?
So... if Cap and "Natasha" get married, the Initiative goes on and we get invaded.... maybe if Cap and Tony got married, Tony would've been against the initiative, the skrulls woudl've gotten repelled easy AND Osborn wouldn't be on charge. (Ok, ok. That's a bit of a strech... but a fun one)