But if you know you were speeding and trying to "charm" your way out of consequences, you're still being deceptive as you're trying to avoid consequences by lying. Even if you're letting your charming personality work via innocent acts and/or flirting, you're still trying to lie your way out, and that's Deception.
Frankly I don't see Charm being very applicable in most contentious circumstances where, in all likelihood, you ARE doing something improper and trying not to face consequences for it. That's why I see it as misnamed at best and underpowered at worst given these readings.
My example didn't have a dishonest element to it. It was a straightforward attempt to get a break based only on appealing to the officer's good nature.