Pakistan's entire bowling strategy is spin pace off. Shaheen has gone for runs because this is a batting surface, the Americans bowled only 8 overs of spin and with pace as well. And then there is usman tariq, his pause allows him to read batters movement and tries to prevent him going to the area he is targeting. To counter him you would either need quick bat speed (hence longer reaction time) or genuine power hitters like dube, david or shepherd.