Here is a pretty good example of the point I'm getting at:
Effects of resistance vs. aerobic training combine... [J Am Coll Nutr. 1999] - PubMed result
Cliffnotes-
Two different groups were put on an 800 calorie diet.
-Half did resistance training in 8-15 rep range
-Other half just did cardio
-Those that did resistance training lost more weight
-Doing body weight exercises for 20+ reps is just going to result in a fantastic cardio workout.
To pose a question for you.....why do you always see bodybuilders walking on treadmills and lifting heavy weights in their pre-contest cutting phases?
Why don't they just run on the treadmill for the same amount of time, and superset every exercise?