I second this. I gave most of the default remixes a try as a Rhythm Heaven veteran—first with a controller, and then with the keyboard. Neither changed the fact that doing what felt natural to me led to most inputs being registered as "too late", with noticeable improvements when I'd force myself to hit the button slightly ahead of time.
Needless to say, that's...not really the most pleasant way to play a rhythm game 馃槄