Never, and I repeat, never download a free copy of a photo editing program and expect it to resize the picture and look decent afterwards. That is my sin on this picture. My excuse...my compute was in storage for almost 2 weeks, as well as my CD of Photoshop.
You might want to check your method of resizing the shot -- it looks like some of the details got a little funky upon resizing. In other words, as an example you can see that the man's back is a bit jagged rather than being a smooth curve. I'll be glad to lend a hand if you want to PM me.