I was in the middle of writing pretty much the same calculation that @DeeV did, so I'll skip that, and supplement his answer with some additional information instead.
Weightlifting to burn fat?
The long and short of it is that calories burned during weight training is so negligible, that you shouldn't spend any time thinking about it.
You should choose your weight training program based on other factors. And in any case, like we've discussed earlier, you should be cycling between a bunch of different programs, so whichever ones you like, line them up, and do a few months of each.
The best ways to burn fat
...are done firstly by regulating your diet, and secondly by exercising in ways that increase your heartrate.
DeeV mentions that 25 reps of 50kg squatting (or any up-and-down exercise for that matter) burns 7.5 kcal.
If you do 7 sets of this (that is 7 sets of 25 reps at 50kg), you will have burned roughly 500 kcal. Or roughly a Snickers bar.
So if you're looking to burn fat, it takes you 5 seconds to forego the Snickers bar, but it would take you days to do 7sets * 25reps @ 50kg.
If you're already pretty good at not eating candies and sweets, your bodyfat is getting to you from other sources, and losing fat is all about finding the weak spots in your dietary habits, and eliminating them.
Personally, I find it much easier to forego the "bad" foods when I do a simple calculation as demonstrated above, and realize just how big of a difference it makes to, say, have a glass of water rather than soda, or another helping of vegetables and one less of meat.