2* cover drop rates from PVP

Quick question for the devs - is the 2* drop rate from PVP tied to your roster strength or MMR? You hear a lot of people on the forums say that 2s drop “like candy.” I have two accounts, one that I started recently and a Steam account that has 45 characters and around 460 hours of play time with a healthy number of 100+ 3s. It seems to me that the Steam account sees 2s drop pretty regularly, while the new account is starving for covers and things to spend ISO on. It could definitely just be some confirmation bias or the fact that I don’t keep track of things I don’t care about (like 2 covers in an account that has most of them cover-maxed) but I’m curious.

I highly doubt drop rates vary by roster strength. Your main account can probably just process fights much quicker with the better roster, thus increasing your overall drops and 2* drops proportionately.

I seem to have actually seen a decrease in 2* cover drops from matches recently despite the fact that my roster has consistently been growing. I think it’s probably a randomized pull, and it’s just easy to be an outlier and feel like that’s the norm.