A Comedy That's "Laugh Out Loud Funny!"

I don't understand the prevalence of this as a DVD-box blurb. Some critic or other confirms that the comedy in question is indeed "Laugh-Out-Loud Funny!" Sometimes with hyphens, sometimes not. But the point is, what kind of a ringing endorsement is that? Isn't it rather faint praise? Shouldn't we consider the generation of at least a little audible laughter to be a sort of bare-minimum criteria for anything to be hailed as "funny"?

I mean, if I don't laugh out loud at least once...how funny was it, really? I'm guessing "not very." At best we're talking "Chuckle-Inwardly Amusing."