Can anyone find a decent resolution of the original?
If you can post a link to it I'll touch it up myself and show you that it could be done better by a non-professional.
In addition, I will say that even if the touchup is less obvious visually there are computer algorithms that can spot tampering and I can't imagine someone like Reuters not using this tool.
Something really stinks here, and it's not just the guy accused of tampering with the photo.