I've not proven your point at all, as your claim fuel brands makes chuff all difference is false.
You were the one who choose to focus on the small amount of top end power gains (negative) of Tesco to BP, not me. Out of that entire video you could have focused on the mid range gains (positive) which are circa x3 as much as the pointless top end difference. Midrange gains improves the way a car drives more so than top end differences.
This thread isn't about tyres and suspension, it's about fuel and of the shelf as shown in the test above Tesco is proven to be better than BP and it's noticeably cheaper too.
You know a battery does have two terminals, you don't always have to choose the negative 🙂