Hmmmmmm good questions. I too am interested in biophysics and I applied to some biophysics programs, some molecular biology programs, and some physics programs. If you apply to a biophysics program, I think they embrace people of many different backgrounds. For example, check out Berkeley's biophysics students. I would say that half have backgrounds in biology/biochemistry and half have backgrounds in physics/mathematics/engineering/chemistry (http://biophysics.berkeley.edu/students.php
). If you are interested in straight physics programs, I would assume most programs have the majority of their funding in condensed matter. However, I would assume that more students are applying for condensed matter as well. It may be that 50 students apply for 5 spots in biophysics and 200 people apply for 20 spots in condensed matter (I'm just making numbers up here), so that the acceptance rates would be the same. So my take on the whole thing is that you should apply to the field that you are most interested in, and not worry about the numbers.