No, Jj2 was kinda like UT in 2D and thats why i liked it so much,

JJA sucked completly and part from that some grapichs where taken from the jj2 game, the game didnt match anything that had to do with Jj2 imo, the story was bad, jazz looked bad, well we know the story.

JJA is much like the Commander Keen GBA version which is just the same story

Epic Games should make Jj3 but not with the Unreal 1.0 engine :X and certainly not from the demo which never got released or finished.