Why are my posted images are always softer?

Ok, I need some other eyes to look at this, do I need to update my prescription or does it seem that the photos I link directly from my Smugmug gallery look softer than the exact same photo viewed on my Smugmug site or in Lightroom?

Here is what I'm talking about, when you compare this photo
http://christio.smugmu​g.com …dxB/0/X2/i-R6NKdxB-X2.jpg

Or this photo
http://christio.smugmu​g.com …pJn/1/X2/i-fBmbpJn-X2.jpg

It looks worse than directly on the Smugmug website or in Lightroom. Here is a direct link to my Smugmug site that those images reside on.

I'm using the Direct Photo links under the Owner Share/Get a Link/Photo Links

Thanks for looking!

On my monitor, the 2 B&W images look identical. I viewed them both at the same resolution, and lined them up in different tabs on the Firefox browser. When I flipped back and forth, I saw no difference.

I think I figured out the problem, it was my browser's (chrome) zoom setting. I guess I had it zoomed in past 100% and it fuzzed it ever so slightly. Thanks for looking Harry it was really bothering me haha! Now if I can just find a way to get Facebook to display images without compressing the heck out of them.