^Nahh, then people would be asking video-store clerks why they didn't have Wolverine: Weapon I - IX
That's assuming the average person would think of Roman numerals when they see the DVD case up on the shelf.
Here, you may need this:
Besides, there's a real basis for the joke. It's reported that there were some moviegoers who saw the film version of Shakespeare's Henry V
and said they wished they hadn't missed the first four films.