Meh. I prefer the original version. I'm not sure this will really help them. Most of All Time Low's fans already know who they are. All Time Low has not fared too well on the charts, so I'm not sure why this would improve WATIC's chart performance.
Maybe they just wanted to do it for fun because they're friends. Not everything has to be centered around chart success and money. They could put Mark Hoppus in a song (as we've seen with Tonight Alive) and they're still not gonna blow up.
I think I prefer the original to this new version. it might be because I'm used to hearing Jordan's voice and I like hearing his voice, or it could be because for reasons I don't know yet.
It doesn't seem they have changed anything about it other than letting Alex sing in it. Maybe come tomorrow when it is released on ITunes I can give it the attention it deserves to come to a more complete conclusion.