Nice Shot w/a Powershot???

In a magazine ad for a camera, is it fair to assume that the photo featured in the ad was taken using the actual camera being advertised??

How to verify? It reminds me of the "scandal" surrounding Microsoft staff using Apple and other products to create websites and such - even though MS made similar (though not quite as good?) products.

For the record, the photo of this ad for Canon Powershots was taken with a Powershot.