A 48-year-old man with a history of type 2 diabetes mellitus and hypertension is admitted with acute peritonitis secondary to perforated peptic ulcer. He is obese (BMI 34 kg/m²), has a full stomach (ate 3 hours ago), and is hemodynamically unstable (BP 98/62 mmHg, HR 118/min). The anesthesiologist plans rapid sequence induction with rocuronium instead of succinylcholine. Which of the following is the PRIMARY advantage of rocuronium over succinylcholine in this specific clinical scenario?