with current strats the absolute best possible time is probably just above 22 minutes from what i know, so until some new strats are discovered id say no, but in the future 100% (best il strats might break 22 idk)

no you can play on any official nintendo hardware that the game can be played on, this includes any ds model, and 3ds model, and wiiu VC

The Wii Classic Controllers are not compatible with NSMBW because of the motion controls, all controllers usable (the two that Caleb mentioned) are on the back top right of the game's case, which is done for all Wii games.

q

in resources there are strats for different levels of play for every level in the game that help a lot

also in resources theres strats for all levels of play, would highly recommend

Times are judged by the igt not a third party timer like livesplit. You take the final time when you hit the flagpole and subtract that from the starting time to get your time.