I can't compare the graphics of the port to the console version since I don't have a copy, but that didn't stop me from being amazed by how beautiful Dead Rising 3 is. After playing around with both setups I found myself most comfortable playing with a gamepad, but if you prefer playing with a keyboard and mouse your experience won't be worse for it. The good news is that if you don't like the standard keybindings you can rebind them so they work for you. Since it's a port, the UI and everything is set up to use with a gamepad, so if you're playing with a keyboard and mouse there are times the controls feel a bit clunky and awkward. Fortunately, if you're willing to do a bit of manual tinkering, it isn't hard get it to run at 60 fps. According to the developers, the game has been locked at 30 fps because it had already been optimized to run at that speed.
As a port, the Apocalypse Edition holds up well. I installed it after the patch went up, and I didn't have any performance issues. But Capcom was able to get a patch up in the first week and it looks like it fixed the problem. Players that installed it in the first few days were experiencing random game crashing bugs.
The PC port's release had a rocky start to say the least.