One would hope that Apple does know about marketing. It seems that they do... at least I think so.
Although, being a big company with lots of dollars available for advertising doesn't always translate into a successful marketing campaign.
It's not always a given.
ie. the lemmings ad was not received well and it was shown only 1 year after the iconic 1984 ad.
Agree (except that I am baffled that you would only *think* Apple knows marketing) - knowing marketing ≠ every ad will be a big hit.