Toyota Fortuner GVM is 2,450 KG, Curb weight is 1,800 KG with 160 HP for 2700cc engine.
Toyota Land Cruiser 80 series GVM is 2,960 KG, curb weight is 2100-2300 KG with 129 HP (1HZ) and 154 HP(1HD-T) engines.
I dont understand how power to weight ratio is an issue for Fortuner. and also how is it under-powered.
By the above specs it seems that TLC 80 series is UNDER-POWERED compared to Fortuner