Bublik's opponents were much stiffer competition than Alcaraz's. Carlos did his work impressively (aside from the first round hiccup) but Bublik showed more this week.
Bublik beat Coric, Struff, Sinner, Zverev, and Rublev.
Alcaraz beat Rinderknech, Lehecka, Dimitrov, Korda, de Manure