1.23 is the way to go because stuff done in 1.23 can be migrated to 1.24. But not the other way around.

Also, in regards to gameplay, I was more or less referring to the level set and the bosses. The style of the game as a whole represented a more cartoonish JJ2 as opposed to 1.24 where the story was about as lame as all other aspects of the levels and gameplay as a whole. I felt like 1.23 had more of the "spazzy" feel while 1.24 was more or less "linear" sorta speak. Just a game they did out of boredom with no real purpose intended except to make money.