The territory bonuses are each 15% of the basic crit success amount, not a flat 15% added on top. Assuming the base crit success is 30%, having both crit territories only really adds 9%, for a total of 39% crit chance, not 60. This is what accounts for the streaks of crap outcomes. I’ve failed huge AP 6 times in a row. Earl is a sumbitch.
Taken a step further, any % bonuses relative to territories are factors applied to whatever base amounts might be, so the increased item drop chance, weapon parts breakdown chance, and increased AR success chance fall into this category as well. You can use the AR example to see for yourself, as the percentages are actually numerically displayed (for once.) Holding all three territories superficially looks like a 30% increase, but it’s the (% chance to level) x 1.3.
It’s another purposefully vague/ambiguous element to the game, but consider the source.