actually when I tried these 2 engine oils, my fuel consumption still the same LOL

Even if you track your car in stock form, provided that you maintained the car reasonably, unlikely it will not overheat the engine oil. The faster you go, the cooling circuitry also works harder correspondingly. The added velocity of air also draws more heat away from the radiator and other heat sources.

It is very hard for people to accept that, unless track ALL the time or the car was purpose built for tracking/racing, if thinner oil that is within the stated spec in the manual, there would not have any noticeable ill effects (even if you track once in a while in stock form).

If you really want first hand experience, please spend some time looking through the pinned dedicated engine oil thread, very informative with used oil analysis to back up.

Also, please read have some readings valvetrain/drivetrain components and oil related articles in the "tech centre" segment of enginebuildermag website. It is quite deep for starters, but you get solid knowledge from real engine builders :
https://www.enginebuildermag.com/tech-center/

i would argue otherwise
in term of probability, it'll be foolish and low possibility for multi million supermarket corporation who had everything to lose if they been caught selling counterfeit stuff just to earn the small profit from engine oil section
they had their products displayed in front of millions of shoppers which includes their competitors, other oil suppliers,and even Shell or petronas staff to examine, if they sell fake oil they'll be caught in 5 seconds, they won't survive selling fake thing for so many years now.
but different stories for small individual parts store outside, they always stow their products behind the counter unless you want to buy, they can change their inventory very fast to cover up,they're relatively small and selling fake stuff provide them big profit, and they have relatively nothing to lose, i would be more wary of these stores than supermarket

most Malaysians are too accustomed to malaysian automotive over priced products that they thought the high price should be normal
if you think 99 bucks is cheap for 4 litre, America had it cheaper and much more options to choose from and it's cheap all year round, no need wait for promotion, that's the real price of engine oil, petrol station here are ripping the shit outta our pocket.
the other automotive item that we're being ripped off with insane margin is car care products like turtle wax or meguiars

so why shell malaysia no sue hypermarket?
can get a lot of money yo!

free market should always be our benchmark to compare price, not heavily taxed country which had the price muddled beyond useful comparison.
if product are the same, intrinsic price should be the same, the price differences are in tax and margin on top of the base value.
i encourage people to question and examine more of the pricing mechanism rather than accepting whatever price the seller or gov like us to pay, it's sheep mentality