It would be... weird.
And according to this Youtuber it t would include some sad violins and a bunch of weird letters from Tony Stark to Tony Stark. So, if watching the trailer made you really impatient for the releasee of Marvel's Civil War, this probably won't be a substitute. But it was a lot of fun! If you haven't finished the comics (and still plan to), this video does contain spoilers. So beware.
"Tony Stark, motivated by how well things had worked out so far, continued to more forward with his ideas."