Is the quality of life and are the health outcomes the same as those of the countries they're being compared to for thier middle class? Is it not a relative ter

Is the quality of life and are the health outcomes the same as those of the countries they're being compared to for thier middle class? Is it not a relative term? "According to The Economist, 78 million of India's population are considered middle class as of 2017, if defined using the cutoff of those making more than $10 per day, a standard used by the India's National Council of Applied Economic Research" So, apparently no probably not to my first question and yes to the second.