Benfica vs FC ST. Gallen Prediction & AI Analysis

Benfica need to overturn a 1-2 aggregate deficit at home, and the market's extreme favorite pricing (Match Winner 1.17, To Qualify 1.19 ≈84%) reflects a large squad-quality gap that should produce a wide winning margin as Benfica commit numbers forward to chase the tie. Implied probability for -1.5 is about 68%, in line with our read given the urgency to score multiple goals. Risk: St. Gallen already scored twice away from home in the first leg (actual 2 goals vs 1.63 xG), showing they can punish gaps left by an attacking Benfica on the counter, which could cap the margin at just one goal.