Did the real Arturo get left behind?

Co-creator Tracy Tormé said in this interview:

For what it’s worth, I believe the wrong Arturo slid.

And in the season 3 episode The Guardian:

Arturo comments that he has just seen his first American football game. However, the original Arturo seemed like a pretty big American football fan.

Co-creator and writer Tracy Tormeé has hinted that seeming gaffe was actually a clue inserted to show our Sliders no longer had the Arturo they began with.

Even though it was never resolved in the series, I'd go with Tracy Tormé's original intention of it being the wrong Arturo.

There was a lot of "bad stuff" going on behind the scenes, from unhappy actors to deliberately ending the series with a cliffhanger (the production team knew in advance that season 5 would be the last season).

In season 2 episode 9 titled In Dino Veritas, they are all 4 wearing collars around their neck, the collars shock them if they don't tell the truth. They stated they got them in a previous world, although we don't see that world like many. Anyway i think depending on how you look at it this episode shines evidence on that. The evidence is the collars. Like i said they get shocked if they lie. So the other characters we can assume would have asked him if he was the real one (original) or one from the multiverse. Depending on the collars shocking him or not would have told them. As we all know they don't tell us if they asked him. But then again during the episode when the two professors fight ending with one sliding and one staying, we see a shocked oh no look on the professors face. So this could leave us to believe he was left behind. I think it was meant to be a cliffhanger. Basically left to a open mind and what we want to believe.