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 Toulouse created more (1.34 xG against 0.69) — points dropped.
Lorient: −1.4 for the season (12 in the table). Toulouse: −4.0 (13). The gap between points and xPTS is built from matches like this one.