If you are the head of a litigation firm I would hope you have a minimal level of knowledge about litigation, wouldn't you?
It means he was much better prepared for the job. Who cares that he was coached? Everyone is coached for almost everything they do, whether through formal education or on the job learning. Obama displayed the care and the ability to educate himself for the position. Trump hasn't. The idea that he's going to go win the election, hire some "really great people" and have things work out is absurd on its face.
Having hired, or seen hired, a lot of lawyers in my prior job you can see what may be good or bad, but your working knowledge is somewhat limited compared to them.
We had one firm we hired for a large bankruptcy and litigation thst was horrible. Two partners billing at 750hr each would just parrot you. We fired them and the next firm was much better. Did we know that out of the gates? No.
The whole notion that you can get briefed for this job or have some operators fill younin, is silly. You delegate. You cant know what the Cia knows, especially if you aren't a congress person. But you'll know who you need to hire.
Which is what has been touted as Lincoln's greatest strength. A backwoods attorney didn't have much experience running a country but he found out who would and accumulated one of the best cabinets in history.
Do you think fdr had a working knowledge of what would get us out of the great depression? Who could run the various jobs programs?
Do you think he knew how to run a war effort even if he was sec of navy? No, he hired people.
Trump doesn't need much to get enough knowledge to figure out who to hire, if anything. There isn't a single person that has unique and indisposable knowledge in that space that trump can't easily get.