Power for IAS/attitude for aimpoint is (generally speaking) taught by the military.
Attitude for IAS/power for aimpoint is (generally speaking) taught by the civvies.
Guess what........BOTH techniques work just fine if correctly flown.
Just get in a Piper Arrow and chop the power completely at 100 feet on final and you will find out
Chop the power in ANY aircraft at 100FT and it's called a glide (or power off) landing. In that case the ONLY way to control IAS is with attitude.