Yes, it supports legacy games and IIDX, which Asphyxia doesn't. Also, it allows for score saving, which eaLocalServer doesn't.
It works on:
Beatmania IIDX 20/21/22/23/24/25
The BishiBashi
Museca
Museca 1+1/2
Pop'n Music TUNE STREET, fantasia, Sunny Park, ラピストリア, eclale, うさぎと猫と少年の夢, peace
REFLEC BEAT, limelight, colette, groovin'!!, VOLZZA, VOLZZA 2
SOUND VOLTEX I/II/III/IV