...but while there are fanatics on all sides, there tends to be less fanatics on the democrat side...

...and I just really like the idea of Tony taking the bullet meant for Steve.

...and hey, that makes more sense anyways. Didn't Red Skull give Cap a blood transfusion once, cause he was one of those villains who are really fixated on their heroes? It'll make more evil sense if he shot Tony to make Steve angst, instead of outright killing Steve.