This article is meant to present information PL has helped me to deduce through analyzing post match scores and player stats post match.
There are 5 tiers, the lowest being 5 and the highest tier being tier 1.
We do know PGI's distribution model is just fixed PSR watermarks to meet. As the PSR acual values are hidden, PSR watermarks used are irrelevant since all one sees is a PSR Tier progress bar on one's home page. After each match, under the player stats tab, a Green chevron pointed up indicates a PSR increase, a Yellow equal sign indicates no PSR change, or a Red chevron pointed down indicates a PSR decrease for that given match performance as measured by match score.
We have through trial and error deduced some of the watermarks for match scores on wins and losses that trigger a change or no change in one's PSR.
On a Win:
PSR goes UP a lot if match score is >400
PSR goes UP a moderate amount if match score is >250 but <=400
PSR goes UP a little if match score is >= 100
PSR has NO CHANGE for a match score <100
Note: I do not have data on a zero match score if that would cause PSR to go down on a win, but I suspect PSR does not drop on a win, at the very least I have not experienced that.
On a Loss:
PSR goes UP if match score is > 400
PSR has NO CHANGE for a match score >250 but <= 400
PSR goes DOWN a little if match score is <=250
PSR goes DOWN a lot if match score is < 100
On a Tie:
Both sides, all players see a NO CHANGE to PSR regardless of match score.
As you can see, winning makes it easier to improve PSR.
However, PSR can go up steadily if you can consistently match scores above 250 and 400 on losses.
So what goes into match score?
The short answer is almost everything from Spotting, flanking, protected formations, shooting down enemy UAV's to kills, assists, damage, etc. See more on this here.
Currently, the single largest contributor seems to be damage dealt. Assists seem to be the second biggest contributor and then kills, the rest are very small contributors in the present state of PSR (September 2015), and may possibly change over time.
It appears to me that about half the damage dealt contributes straight away to match score with assist, kills and all those other things making up the difference. Sometimes a PSR, no change on a loss, can occur without a high damage (>400, meaning obtaining well under 400 damage) if many assists are made. But that assumes the losing team made many kills... which means it was a close match anyhow.
This is what we know at present, with more data it is subject to change. PGI will very likely alter it and not say how since they have not shared the above information watermarks.
Info on PSR from Paul @ PGI
Edited by 7ynx, 10 October 2015 - 04:47 PM.