I think Moyes is a safety first merchant, who got 100% effort and determination from a collection of niggardly footballers for many seasons. He used a style of football that could only get Everton so far, no further than many other good managers could have taken them, they are a big club. I have no idea how his CV made him the best candidate to become manager of Manchester United.
Despite this early uncertainty, I disagree. I do not think he is another Ferguson, but there isn't one (and I write this as a Gooner).
But... I thnk that Ferguson (the selection panel for his own replacement) saw in Moyes a keen student of the game who sticks to his guns, won't accept second best and can lead a group or a team.
The set-up SAF leaves behind him in 2013 is on another planet from what he found when he arrived. SAF joined MUFC as a football manager, but Moyes comes in as an Operations Director in all but name. He has excellent coaches, excellent advice, excellent facilities and will grow into the role over the first season.
I do not know, but I think he could finish 6th or 7th and not lose his job. MUFC seem to have concentrated on stability and transition.
Meanwhile, what a corker of a season ahead. Any one of five (six?) clubs could win the EPL. It's going to be fascinating to see which team finishes a distant second to AFC.