strength training is not superior to cardio. in cardio, you will lose weight faster because you are burning more calories in less amount of time than you would in strength training alone. you are also less restricted, you are able to exercise for longer unintermittedly. as it turns out though, the end results are
equally sucky on their own, the most effective form of weight loss is neither, it would be a combination of the two, so we were both wrong.
here are two quick studies I found that support my conclusion-
this one for healthy older adults:
http://journals.lww.com/acsm-msse/Ab...aining.21.aspx
this one for slightly obese younger adults:
http://www.ajcn.org/cgi/content/abstract/66/3/557
if you had to choose between the two, I would still say that you should opt for cardio. you just have more flexibility in your work out than you would in strength conditioning alone, because of this you can do it much more casually and get the exact same results you would have if you were doing squats, situps, pullups, weight lifting, etc.