In the strictest sense (at least how I look at it), Modified BSD (or BSD family stuff in general) is freer because it places no moral burdens on me to share with others should I so not choose. Granted, I'm being a greedy antisocial shithead, but maximum freedom ought allow that.

Apache is similar, except that it also attempts to say "hey, you are allowed to use whatever patents I control that would be infringed here".

License folks feel free to correct me on this point.