The EPR write-ups have nothing to do with your rating or raise at SF. They never have, at least not since 2001.
The management teams sit around and rate the associates to ensure a good bell curve exists and have to sell their peers on why you should get the rating they are selling.
Then, once ratings are decided. They divide associates into various groups for raises and have target percentages (for the group). Each manager submits the raises for their team members and they run a report to see where adjustments are needed up or down to hit the target. Again, this becomes jockeying for position and if your manager is not persuasive, or is not respected - your raise suffers