I'm amazed at how many posters on here KNOW that Potter will fail, or is not READY for the United job. Please can I borrow your crystal ball!
From what I have seen from Brighton, they appear to be very well organised, each player appears to know his job, and, most importantly, they play as a team.
I remember last year's match against Brighton away, when we were pummeled for most of the game, Brighton hitting the woodwork 5 times, and with a fortunate penalty we won 3-2. Our midfield two that day was Matic and Pogba, so I can understand how we struggled.
When looking at the Brighton team, how many of their players would you class as top premier League players,not many I would think, so the underlying fact is that Potter got his 'inferior' players to perform above their individual capacity, whereas we get our 'top class' players to perform below their individual and collective capacity, i.e. we don't play as a team.
I have no idea if Potter would be the man to replace Ole, if, and probably when that happens, but in my limited knowledge of football (only playing semi pro football), I know that players will take to a manager/head coach if his training is interesting, and his knowledge of playing football and strategies, plans etc are well thought out and implementable.