1) If the video was for Australian audiences only it would make sense but the 86 comes with a variety of different tyre options for different territories so a 'standard' test would not be standardised for other regions, and most of our audience is actually overseas.
2) Most people in the automotive blogosphere already know what tyres come on the 86/Prius in Australia (there's so many arguments about them and online rantings from unhappy owners already) and we don't really want to get into a brand debate on screen because it's not the point of the video to simply compare tyres (We've done that already which you can see on our channel)
3) For anyone with a car that's NOT an 86 (99.5% of the people watching), the results are more relevant because it's comparing items that are commonly available for any car no matter how new or old it is.