Marth:MK may be tipping back towards 40:60. Maybe.
With 18% damage out of a grab release, killing from the centre of fd at 120% (nair), we have a reliable kill move and damage racker.
Counting off that it only takes two dancing blade strings to clear your move set, that also combo out of grab releases...
With Marth's dsmash 'out ranging' [out disjointing] MK's dtilt, making it very reliable for a shield drop punishment and having Marth's largest tipper hitbox...
Whilst we've been told to not fish for the grab, as it is heavily punished, we're finding ways to execute them, and the better Marth is at grabbing an MK, the easier the match up gets. As we have reliable ways to take anywhere from a 1/5th to a 1/3rd of MK's stock for every grab.
But eh, we still get gimped hard.
Pivot boosting out of grab release may be a found way to string tilts, smashes or other moves from a grab release.
Boost Pivot Grabs don't allow for a cg.
Boost grabs may allow you to cg meta.