Wouldn't it need to split into PS3 PSN, PS4 PSN etc if that was the case?

ZX Spectrum
Amstrad CPC 
For The original Pac-Man

Furry: PS4 versions of games load faster and in certain cases like Star Wars: Bounty Hunter, run at faster frame rates (PS2 - 30fps, PS4 - 60fps) over the PS3 versions of said game. PS4 versions of classics also have trophies (not that it matters). 

Edit: Certain versions of the same port (GTA: San Andreas) has small differences. Also, the reason why I posted here in the first place:

Can Panasonic 3DO be added? Super Street Fighter II Turbo had a console release on this platform and has minor differences compared to the other ports.

I think the thought process would be that "It's not an actual PS4 game". My suggestion is that "PSN Classics" should be the categories as often times, PS3 classic are not the optimal versions to run due to input lag.

Request: Nintendo Switch (a.k.a. NX) 
Release: March 2017
Kappa

Request: Rename Sega Saturns shortage (SAT) to just (Saturn) instead. Looks better and most people know what it means. Its old (SegaSaturn) just looked bad.

I guess it is the same for Sega Genesis (rename it to just Genesis) :)

Could you add a Plug and Play platform? Surprisingly people are actually running P&P games, so a platform would be nice.

When I added this game http://www.speedrun.com/Dragon_The_Bruce_Lee_Story I tried to add  Atari Jaguar as one of platforms the game was released for, but I notticed it can't be chosen. Why?

It can be chosen; just toggle the 'show obscure' button.

Game & Watch

For : http://www.speedrun.com/Zelda_Game_and_Watch

Nintendo Switch, being as its more than likely going to have speedruns. As well as releasing tonight, would recommend :+1:

Switch is under "Obscure platforms" at the moment in the edit game screen.  It needs moved, but it's certainly usable.  I added it to BotW, but then someone deleted it.

Does it really need to be added now though, instead of, I don't know....Closer to release?

Still got 5 months lol, the console hasn't been approved by the FCC either which is why you can't preorder yet