I would put Martinez currently about evens with
Moyes.
Not Everton
Moyes though - United Moyes.
Its not great by any stretch, but I think given time, United would of turned the corner and actually done well under Moyes, I think Martinez is capable of doing well here, he just needs to get across the finish line this season imo, replace the dross with a few key, cheap, signings and come back without fear, which seems to cripple his decision making.
Not a fear to not go forwards, but to change the system, to drop certain key players etc.