I think the one in the middle is like, the previous version for phones. Looks like a PSP sprite, except FF6 never got a PSP version that I know of.
The one on the right is the Pixel Remaster version, I think.
And yeah the PRs are supposed to be pixely. They're as close to the originals as they can get, while also giving them widescreen and smoothness in the pixels and so forth. The goal is for them to "look like what we remember" since the originals no longer do.
In other news, here's an FF6 shot for people with a fetish for the number 9:
View attachment 474398
Meanwhile in FF5...level 90 to 91 took an age so I tallied up the numbers. Looks like it'll take about 80 fights in the final area to go from 91 to 92. This is WITH 4X EXP. So it'd be around 320 fights per level normally. I really don't know what they were thinking with FF5 levels.
Extrapolating that out to add some as levels increase, it looks like I'll need about 700 more battles to hit level 99.
...yeah, I'll chip at this when I'm not doing anything else I guess. The other FFs were all fun to max out but this one is just "what were they thinking".