Street fighter will always be a more technical fighter than any other on the 2D genre. Blazblue (after Guilty gear) and the new king of fighters ( of a long dinasty) are coming in second and third place respectively.
Back in the day MK was a clear competitor to SF supremacy but eventually lost the battle. One thing is true, nobody has come close to the over the top violence and fun offered by the franchise. Maybe Killer Instinct, but Nintendo never capitalized.
Marvel vs series, darkstalkers and Samurai Shodown are worth mentioning too.