The thing is, I did my calculation with a very plausible otucome in normal (A - A), and the worst otucome in hard (C - C), and hard was still the much better option.
That is, maybe hard is that hard, so thats not taken into consideration. Im really scaredd of trying the song in hard even once for that matter. Or maybe is not so bad for my current level of playing (full comboed all the hard songs in the english version already).
Not sure I follow, but A/A in normal gives 133 points (4.43 per token) and a C/C on hard gives 186 (4.13 per token) as seen on the chart. http://decaf.kouhi.me/lovelive/index.php?title=Gameplay#Events
Normal is more efficient most of the time if you can do A or B score ranks and not get higher than C in hard.
Just looked at the rankings and there's already someone with 11k.