Fantastic post! But can we please, please stop calling power point presentations "decks".
The term you are looking for is Slideshow.
"Hey are you working on that deck?"
"Yeah, I just need to run to Home Depot and get some more nails"
A deck is that wooden structure on the back of your house. A power point presentation is an electronic file made up of "slides". There is also a "deck of cards", but no one calls a deck of cards just a "deck". Maybe if they called it a "deck of slides", or you know just use a term that makes sense, like "presentation".
To me, a "sales deck" (current title is "The greatest sales deck I've ever seen") implies a stack of playing-card sized marketing material, or a joking reference to your stack of business cards.