Is it me or the camera? Detail seems very lacking.(60D)

Looks better. The top one is sort of decent in the middle (windmill), and get blurry left and right, but that seems characteristic of the 18-135, i.e. ok in the center, but not so great at the edges. Still, it looks like the right edge is softer than the left.

The bottom image is harder. I would recommend anyway to shoot something that is relatively flat, i.e. the proverbial brick-wall. If we take the fence at front, it's sharper on the right than at the left. I seems to me your lens is indeed somewhat decentered. The way it looks is that this decentering causes a front focus on the right side.

So, overall, your camera 60D should do a better, especially at the edges, and it seems you don't have the greatest copy of a 18-135 either.  Perhaps there is also some slight front or back-focusing of the lens, because the mountains in your original post seem to be nowhere in focus really. It could be atmospheric conditions - quite possible, or perhaps the focus was off. You would have to test that with a live-view (10x) manual focus tests to see if it gets better.

And no, I don't think think there was condensation on the front lens when you shot the mountains. I have had this, and I know this will look like shooting through a milky screen, you get a dreamy loss of contrast situations.

--
*** Life is short, time to zoom in *** ©