I'm not sure where that person who said if Judas was the first video on Vevo to automatically play without having to click on it got it's information, but it needs to check it out.
You go into ANY artists Vevo account and one of their videos automatically starts playing - not just Gaga's.
I think that Americano (Spanish & Mariachi Version) might be a regional thingy? Like the EU have another BTW remix and the South American have that instead of the regular Americano on the deluxe edition in terms of a bonus track?