Ha! The power of advertising - Nothing more. I've used and carried a muzzle-ported Glock, everyday, for the past 5 years. Put a good 10,000 rounds down the barrel, too. Know what? I haven't the slightest idea what you're talking about. (And, I already know that neither do you!)The compensator is there to release the expanding gas upward before the bullet leaves the muzzle. This gas is always on fire and usually carries unburnt powder with it.
Imagine having to deal with this as you're engaging multiple targets in low illumination: