In the minds of sane people, those quotes would be taken to mean that the weapon is suitable for home defense and gives you every possible advantage in the wors

In the minds of sane people, those quotes would be taken to mean that the weapon is suitable for home defense and gives you every possible advantage in the worst possible situation. The same advertising model is used for all defense firearms because it plays to the fears that drive people to buy it in the first place (namely, being alone and unarmed against a group of people who want to cause harm to you.) So there's a pretty clear rationale for the focus of the ad - including the emphasis on magazine capacity. That said, competition guns all use standard capacity magazines except in the very few jurisdictions where they are forced to use diminished capacity magazines. My local sporting goods store doesn't even have magazines that are less than 30 rounds.