The score says how it ended. xG says how it should have ended: it is the sum of the chances each shot was worth, not an opinion about the game.
A draw, but Krasnodar created more (1.35 xG against 0.81) — points dropped.
Orenburg: −4.3 for the season (11 in the table). Krasnodar: +7.4 (1). The gap between points and xPTS is built from matches like this one.