The Xbox 360 version is particularly prized by the "FGC" (Fighting Game Community) because it is widely considered to have the and the most stable performance compared to the original PS3 release. Understanding the Xbox 360 ROM Formats
Due to licensing issues between Capcom and Marvel (specifically regarding the use of Marvel characters), Ultimate Marvel vs. Capcom 3 had a tumultuous history regarding availability. The digital versions were delisted for a period but have since returned to modern storefronts. ultimate marvel vs capcom 3 rom xbox 360