I'd say game awareness wins you more chases, but one big over against a weaker bowler can seal it. 164 isn't huge — keep the board moving, don't panic, and pounce when you get that one loose over. Simple, but hard to execute under pressure!
Don't worry! Rohit is still very much part of the team. He's just being rested to avoid burnout during this long IPL season. Expect to see him back leading from the front in the next few matches!