I usually tune to sustain because attack note decades very quickly, expecially on heavier strings, where lighter strings have an attack/sustain note way closer.
Moreover attack note depends on how hard you play the note with your hand, for example no one tune the strings playing like zakk wylde so when you play harder the strings after the tuning you'll get a sharp note.
The problem is when you have different instruments (also guitars and bass) with different musicians. Maybe the bass have different attack note (or also it decays different than the guitars) or one guitarist plays harder than the other so the attack could be different.
It's a pain in the ass in my opinion because each technique has pro/cons.
Moreover attack note depends on how hard you play the note with your hand, for example no one tune the strings playing like zakk wylde so when you play harder the strings after the tuning you'll get a sharp note.
The problem is when you have different instruments (also guitars and bass) with different musicians. Maybe the bass have different attack note (or also it decays different than the guitars) or one guitarist plays harder than the other so the attack could be different.
It's a pain in the ass in my opinion because each technique has pro/cons.