The glyphs for this episode spell out: DREAM
Another noticeable difference between the universes is pointed out when Lincoln mentions Batman to AltLicoln and AltOlivia who tell him that their version of the billionaire crime fighter is Mantis. Despite the cover of The Dark Knight comic that was previously displayed in Peter's New York apartment.
In the parking lot attack scene in the alternate universe, there is a sign that says "USSR." In our universe, the USSR was officially dissolved in 1991, adding to the list of things which are different "over there."