The MSI MEG X870E ACE MAX is the objective winner of this comparison, securing victory in ten out of thirteen evaluated specifications. Its most significant technical advantage over the ASRock B760M PG Lightning is its LAN capability, which performs 300% better. While the ASRock B760M PG Lightning holds a 100% advantage in the number of available PCIe x1 slots, the MSI MEG X870E ACE MAX dominates the overall feature set across the majority of the measured categories.

Users prioritizing high-speed network connectivity and a broader range of advanced features should select the MSI MEG X870E ACE MAX for their build. Conversely, the ASRock B760M PG Lightning is the appropriate choice for individuals who specifically require a higher quantity of PCIe x1 slots for their expansion needs. Your decision should depend on whether your primary requirement is superior network performance or the specific physical connectivity provided by the additional expansion slots.