I think it's more important to bring in the "how close is the arcade hardware to the home console" to fully appreciate the task at hand. Obviously the early days would be pretty rough, but some of the worst offenders are in the later day systems. SNK absolutely butchered Samurai Shodown III when it hit PlayStation 1, Mortal Kombat 1 on the Super NES lost any and all play control, etc.

Though truth be told, SNK censoring the blood on Sam Sho 1 and KoF 95 on their own hardware was a huge crime.