Read the 5th paragraph again, Apaflo --
"Here's one that never gets discussed among sports, action and wildlife shooters, but which our engineers HAVE said is a benefit of Image Stabilization, even at the fastest shutter speeds."
That verifies exactly what I said! The direct source for that is someone who suggests they are a Canon employee ("our engineers"), who is absolutely not an engineer.
Wanna bet on whether the directly quoted statement was made by a marketing dweeb? That is the job that marketing does...