As much as I preferred Sanders, Clinton absolutely has more job qualifications (and certainly more than her opponent, who is downright unqualified to even run IMHO). Lots of very valuable political experience, leadership experience, policy experience (both domestic and foreign)... she's someone who knows the system. A question that ran through my mind as a Sanders supporter was whether or not he'd have the political acumen to really get things pushed through our divided and thus broken system. Clinton knows the game, and while any president is going to have a tough time of it, I feel like she'll be able to get some things done.
There are things related to issues, of course. Thus far I'm not as optimistic about what Clinton will do for the environment as I was (rightly) about Obama, but she (and any typical Democrat) is decades ahead of the backwards thinking of the typical Republican, and certainly of her prime opponent in this election. Until that changes, I can really never vote Republican for any offices that might be impacting environmental issues. I hope that this stops becoming a partisan issue sooner rather than later.