judas23.wad and judas23_.wad

[ReFracture]

What are the differences between judas23.wad and judas23_.wad?

All the servers I see actually playing this wad use judas23_.wad, but I only see judas23.wad on the idgames archive.

[Hekksy]

The BFG trap is different. See for yourself.

http://imgur.com/q0PGGvN