After some overwhelming responses of "Your sample size isn't big enough" blah blah blah, I've decided to keep track of everything I purchase from here on out and get more data. You can view my spreadsheet of raw data here - I will keep it...
premium spectre pack
UPDATE: I have spent about 5M more credits since this post and have updated results - click here to see them! Ok, I promised to do a little experiment to.
A lot of people ask me how I have almost every weapon unlocked to level 10, including Ultra Rares. Assuming you don't have much unlocked yet, here's the most efficient,.
From personal experience, I believe a Regular Spectre Pack wins, hands down! The only time you should even think about buying a Premium Spectre Pack (PSP) is if you've just started playing and you don't have all the common, uncommon, and rare weapons/characters maxed out...
I'm frankly surprised that we managed to exceed the lofty goals of Operation Olympus this weekend, especially given the fact that I only had time to contribute a few matches.