The Acer Predator Helios 18 2025 is the objective winner of this comparison, securing more wins across the evaluated specifications. Its most significant advantage over the competition is the inclusion of Thunderbolt ports, which offer a 100% improvement in connectivity capacity. This hardware superiority makes it the more versatile choice for users who prioritize peripheral expansion and high-speed data transfer capabilities over other physical design considerations.

The Lenovo Legion 9i 16 Gen 9 2024 is the better option for users who prioritize portability, as it holds a 20% advantage in weight. Conversely, the Acer Predator Helios 18 2025 is the ideal selection for power users who require the expanded connectivity provided by its superior Thunderbolt port configuration. Choose the former if you frequently travel with your device, or select the latter if your workflow demands maximum hardware interface options.