I actually did this workout 5 times. The first two times I did exactly the same workout, and the next three added variation to the exercises to hit different muscles. You'll see that there was decent improvement in the number of reps excecuted in within the timeframe; this was done with one rest day between the two workouts. Increases and decreases to the reps in following workouts are really valid comparisons as they were different movements.
Pullups (Palms Up): 78
Body Row: 99
Pushups (Elevated Feet): 172
Pullups (Wide Grip): 74
Pushups (Hands at Hips): 116
I am fairly sore as a result of these intense workouts, but I also feel stronger and leaner. Also of note, my left shoulder had been aching for months from a diving squash injury, but surprisingly within the first 2 workouts the pain is essentially gone and the shoulder feels much more stable. While weight lifting hadn't been making the problem worse, it certainly wasn't helping. Higher rep bodyweight exercises seem to have been the fix.
I will definitely be keeping this routine on my regular list of workouts. It should be easy to adjust both rest periods and reps as my body adapts.