Twin towers have seldom won championships on either the men or women’s side. Ironically, perhaps the most successful twin towers on the women’s side was the 6’4” Lobo and 6’7” Wolters. In contrast, SC won its one championship after one of its twin towers, Coates, went down, allowing for better spacing and guard play during the tournament.
No doubt SC will be better next year, but the main reason will be due to the improved play of their guards. Cardoso might mean no foul trouble or conditioning worries for SC, but I’m willing to bet the +/- when both Boston and Cardoso is on the floor will be less than when only one is on the floor.
On edit: I don’t think either UConn or SC was the best choice for Cardoso. Texas, LSU and Duke are all destinations where her presence would have made a greater impact for both the programs and herself.