Yeah, exactly. With the low tar to nicotine ratio it allows smokers to get their normal nicotine fix while inhaling 50%+ less "crud". They deliver nicotine in the most efficient and healthiest way possible for a combustible cigarette.
As you know, lowering the crud in cigarettes is done through the use of filters. The problem is that filters also filter out nicotine. In normal cigarettes this causes people to take more puffs in order to get their desired amount of nicotine. Along with those puffs comes more tar. XXII has increased the nicotine and put a nice filter on which allows smokers to be able to get their nicotine fix while also having a strong filter which reduces the tar. It's what light/ultra cigarettes thought they were doing originally, which has now been completely dis-proven and why companies are not allowed to market light/ultra light cigarettes. Brand B really does reduce the harm caused by smoking for those unable or unwilling to quit entirely.