In reply to Mike McAlister.

With respect, I think that the design elements are similar in the way that many designs follow a certain trend(s) at any given time. If he is influenced by your themes, which he readily admits, he is clearly also influenced by the many other clean designs that are circulating in the design world.
No one has a monopoly on minimalism, cleanness, and clarity in theme design. And, as Bootstrap has proven, there are only so many ways to deviate from a certain style.
I have followed your themes for some time, and now I am enjoying Anders's themes as well. His are wonderful addition to the world of free WP Themes. While I do purchase themes, I would like the option to use beautiful themes for free as well.
Just because his themes are being "downloaded for free by potentially hundreds of thousands of people," this does not mean that professional theme developers are losing money. If anything, it moves people towards professional themes like yours when they realize that they can have premium options for a theme that they already really like.
I did not see any direct correlation between the two designs. And, plenty of people use the same dummy content.
I like both of your designs. Perhaps we can move away from the negative strain of this discussion.