The % is the% of the record holder, not the actual % earned on the song.
The song is about 1/10th off due to the fact that FFR's engine isn't too great with gap.
1 Credit is awarded for every 50,000 points.
FFR goes by combo not score because FFR is NOT DDR. People have to realize that FFR is meant to be an entirely separate game, they aren't trying to completely clone DDR. Everything does not need to be the same.
By the way, this is a HORRENDOUS amount of goods, but the mods sort of balance it out.