CT does not say 2 different things.
The program, as described by CT expects you to determine your AVARAGE energy expenditure over the entire week. You seem like a busy boy but I don't know about your extra-sports activities (work, study), but CT gave the formula to calculate your energy requirements. And use the acitivity lvl factor inclusing sports.
Hi carb days: tuesday, friday, perhaps you want to pick monday instead. Don't want you to starve on the game day, do we?
mod carb days: monday (or if you have that on your hi carb days, then tuesday or friday), thursday
lo carb days: the others
Now, if you train, play, ... using a heart monitor, that would probably give you an estimate on the energy spent.
You might decide to stray from the program and determine your base line energy requirement (use the activity lvl factor EXcluding sports), then add half of the energy spent on sport that day with extra carbs (expecting the other half to come from loosing body fat).
Re-evaluate after a couple of weeks.