ASUS RT AC1900P Advantages
Larger RAM (256MiB vs 64MiB)
Faster Wireless Speed (450Mbps vs 300Mbps)
Faster Wireless Speed (1300Mbps vs 867Mbps)
ASUS RT AC1200 v2 Advantages
Higher CPU Performance (580GHz vs 1.4GHz)
Faster LAN Port (100GbE vs 1GbE)
Faster WAN Port (100GbE vs 1GbE)