PPP is widely used, even in many Mybroadband/Daily Investor/BusinessTech articles. We had that Shisanyama Index article some days ago, but it is relevant to our country, looking at a curated basket applicable to a demographic. Now apply this to a global scale, where we are looking at multiple goods within multiple markets, and you will run into issues, some set out in a Wiki,
en.wikipedia.org
and that same article quotes the IMF, to quote the direct link (now archived),
beyondbrics, from the Financial Times, brings news and comment from more than 40 emerging economies, headed by China, India, Brazil, Russia, Mexico, Indonesia and South Africa. We cover politics and economics, finance and business - everything that makes markets move.
web.archive.org
and they are right, and it is totally incomprehensible (or rather distorted), globally, when you apply standard(s) tests. GDP and GDP at PPP cannot be reasonably compared on a global scale. This is why we have simplistic PPP tools like the Big Mac Index (global test, single good) or the Shisanyama Index (domestic test, multiple goods).
In perspective, what happens when we are compared in GDP at PPP to China? Suddenly BRICS doesn't seem all too weighted, but the same will be seen with G7 nations. Overall, using GDP in PPP boosts your global marketability more than using regular GDP, but it's important to remember that it's not a reliable method to draw on conclusions. GDP (PPP) is sure a good tool to convince or sway opinion.
In this article it is being done too,
By Chris Devonshire-Ellis The India-based Megh Updates platform, one of the world’s largest online informational platforms in terms of views, has stated that BRICS countries have officially overtaken G7 in share of world PPP GDP, and that this trend can be expected to continue. The BRICS...
www.silkroadbriefing.com
mentioning PPP only once. BRICS will soon onboard Argentina too, quite the PPP boost right there.