I don't think they are better or worse. I just find them to be very different from my experience. I was pretty conversational with my undergrad profs, but for the most part I avoided ls profs like the plague. Most of them are very socially awkward people, I found. Get to know your legal writing prof and 1 substantive prof if it kills you since having 1 who could write a letter for you for transfer/job/whatever is very important and none of your classmates will really expend time on that front.
Most adjuncts only have JDs. It seems to me that the majority of the tenured professors either have LLMs or the Doctor of Law; or they have a JD and a doctorate in some other field (economics, is a common one.) However, that is not universally true- several profs have only JDs.