The NZXT C1500 Platinum wins in 4 out of 9 comparable specs, with 4 ties. Its biggest advantage is Wattage (50% better).
MPG A1000G PCIE5 wins in 1 spec (MSRP: 47% better).
Recommendation
Choose C1500 Platinum if you want the best overall performance — especially wattage.
Choose MPG A1000G PCIE5 if msrp matters more to you.