Commercials are always exaggerate themes of what you really experience or ride on in the park.
Remember the Surrender ads? They don't let you ride with Captain America on the ATVs and you don't run and shoot aliens on the streets of New York in Men in Black.
It would also be like saying you stand in tower of terror while a bellhop operates the drops.
It makes sense, too, since Harry rode his broomstick in the challenge.
I agree with the anonymous poster, though, in that putting a little broomstick decoration on each seat won't overcome the fact that you're still sitting in that bulky suspended coaster train. It won't look anything like that picture, folks. (Nor will riders be issued Gryffindor Quidditch kit before riding, I assume.)
side note, does anyone know if they will be selling maggie smith posters????
MOTHER TO YOUR WORD.... strike that, reverse it