Can't speak directly on that comparison. But I will say the TH-900 has very little bass bleed. It's some of the cleanest, controlled and most impactful bass you'll find on headphones.
It's V-shaped tonally though. So though the bass doesn't bleed into the mids, the mids can sound somewhat recessed against the background of strong bass and treble.
It's V-shaped tonally though. So though the bass doesn't bleed into the mids, the mids can sound somewhat recessed against the background of strong bass and treble.