She's 68. I just looked it up; I thought she was older than that. Trump is 70. IMHO he looks healthier, but I might be biased.
I'm betting Trump has the better make up team and spends more time on his appearance than she does. He did have his own TV show, after all. He's got to be in the habit of looking right for the camera's by now. Most Hollywood (and for all he's a New Yorker, he still has that link) types look a lot younger than they actually are. He's just going to have the better connections and resources on that front than Hilary will ever have.
I will say that I do not like the way the media is glossing over the potential health issues with regards to Hilary. Regardless of politics, that really is an issue that voters ought to be aware off.
Plus, if Trump was showing any signs of illness, they'd be all over that.