Actually none of the template are responsive. There is no code available to make cMap responsive. It would have to be redesigned to add CSS queries for the three screens. However, cMap does work great in the tablet browsers, such as the iPad, and it still functions in the phone browsers. Unfortunately, in the latter, cMap is too wide and usually breaks out of the content width. I’m guessing this is what you’re experiencing.
Now that IE6 & 7 are no longer supported and the mobile browser market share has just recently reach 10% [which includes tables] vs desktop, more focus will be towards to making as many of the templates as possible more responsive friendly.