The license plate on Captain America's motorcycle reads "AVN-A10", which references Avengers Annual #10 (October 1981). This issue was written by Chris Claremont and featured the first appearance of Rogue.
Captain America got out of the time limbo after the Six Forgotten Warriors story and joined the Avengers.
During the scene when Rogue attacks the U.S. military base, she uses attacks similar to those she used in the Capcom video games X-Men vs. Street Fighter (1996) and Marvel vs. Capcom: Clash of Super Heroes (1998).
General Ross is a Hulk villain and father of his girlfriend, Betty Ross.