Brighton's last five matches averaged 3.4 goals, Crystal Palace's 2.6. The over/under 3.5 lines are priced almost identically (1.82 vs 1.85), pointing to a roughly 50 % chance for either outcome.
The 1.23 quote for Brighton implies an 81 % chance of victory, the 5.65 draw suggests 18 %, and Crystal Palace's 8.60 corresponds to about 12 %. Brighton have won four of the last five head-to-heads, underlining their clear edge.