Tom94 wrote:
The bpm specified by the mapper can't be trusted... just look at The Big Black. And even if it could be trusted, there still would be songs which naturally require 1/3 most of the time, making 1/4 in turn harder. There is no general consensus, that 1/3 is harder thsn 1/4. And on top of that it's a very subjective thing - many people tell me, that 1/3 isn't hard for them at all.
The point of BPM was you can get the timelines where the notes are snapped and by this you can detect how far are from each other. You don't need exact bpm to determine the difficulty of a stream.
For example, if two notes are apart by 75ms that means they can be 1/4 on 200, 1/8 on 100 or even 1/2 on 400 BPM. If it's 100ms then it can be 1/3 on 200 BPM, 1/6 on 100 BPM and 2/3 on 400 BPM.
You are still missing the point of the 1/3. 1/3 isn't hard to hit by default, the kat patterns inside is what can make it really weird to play.
For example a kdddk on 1/4 feels natural to play if both kats are located on beats, while kdddk on 1/3 is not so natural if alone if it starts on a beat, because the final kat will pass the beat. While this doesn't require the hand switch, rhythmically it can be quite complicated because it's not intuitive as kddk on 1/3, because while the hand switch occurs, both kats are located on the beats so it's actually expected and intuitive to perform.
If a kdddk on 1/3 starts one tick before a beat, that's ok too, but if it starts on a beat, then it can get weird, especially if it's a chain, because all your kats are becoming one tick off beat every repetition it occurs.
Hope this explains my view better.
P.S. for a good example you can check La Cataline's VANESSA, lepidon's taiko. That's a really good example of good 1/3 rhythms, almost the whole map needs hand switching on streams, but they are really intuitive because of the beat logic I explained above, and that is why it's not a hard map despite all the hand switching (for me at least).
edit:
Pics.
^ A classic kdddk chain which is easy to hit because every kat is located on a beat, making it intuitive to play
^ A kdddk chain on 1/3. Despite looking symmetrical, check how kats are 1 tick late. That's not intuitive to play at all, despite no hand switch required.
Also, check this out:
While it's just a simple stream, kat patterns like that, while they probably won't be used ever because such a pattern probably doesn't even exist in music, or is just so obscure it almost never gets used, check how dumb the kat rhythm is, always being late by 1 tick. It would need a few more repetitions for it to get back to the downbeat too, I just didn't want to repeat it until that because the picture would be too long.
This kind of pattern is also much harder to play because while it's unintuitive, it also requires a hand switch on every kat.