The MacBook Air M4 2025 wins overall with 22 hours battery life (per Notebookcheck) and superior single-core scores of 3800 Geekbench 6 (per Geekbench) compared to the Dell XPS 13 2025's 18 hours and 2400. Dell provides more ports and a brighter OLED panel at 500 nits (per RTINGS) but trails in weight and efficiency. This is a close call only if Windows and ports are required.