As a batting performance this was largely flawless on a pitch where every team has struggled after the first 10 overs, especially while chasing. NRR is not an issue considering the close nature of the matches that Pakistan lost. And besides if there's rain or USA beat Ireland, it won't matter anyway. If USA loses both matches the NRR should take care of itself.
But based on the quality of their pace attack, Pakistan conceded too many runs. Shaheen in particular was really disappointing with his mindless insistence to keep going for that yorker that tails back in...which he hasn't got right in ages. And even if he could, this was not the pitch to bowl full on. Haris Rauf was also pretty wayward but atleast he took two key wickets.
This is what differentiates Bumrah from practically every bowler in the world. Bumrah does not care about the magic balls. He would rather strive to bowl four maidens and be absolutely accurate and on the money, based on the nature of the pitch. He knows that the wickets will come when the pressure builds and batters get frustrated trying to get runs off him.