I’m considering speedrunning this game in the near future, and I was wondering if the enjoy edition for switch is allowed for submissions?

Could somebody explain to me the differences between the NES, SNES, GB, and Genesis versions of this game? I know the 16 bit consoles have better graphics and the gb version is more squished, are there any other differences that would matter for a speedrun, because I am not sure which version of the game I should pick up

I recently picked up a copy of this game, and i am I am interested in speedrunning it in the near future. However, I am relatively unfamiliar with the game’s mechanics, so would someone mind explaining to me the gameplay differences between the two?

I currently have a $10 av to hdmi converter, but I'm pretty sure it has a few frames of latency. The best budget friendly converter I have found so far is the retrotink 2x pro, but is there a cheaper alternative that also has little latency? (I don't really care how the video quality is, since I use a splitter cable and plug the other end to a capture card. As long as I can see what's happening on screen, I'm fine with really anything)

Are all stars runs allowed for submission to the glitchless leaderboard?

I'm not sure if this is significant or not, but I did a 3 frame clip into the ground in 8-2.

I’ve seen a few different Lost Levels reproduction carts for nes online. Would these be allowed for submissions or not?

Can anyone help me understand what’s going on here? https://youtube.com/playlist?list=PLTbUD6p8M0z9R-AZFCbdPvRHJlwBzePLl&si=dk7tS_KlrEH92Ve9