they won't . not in SEA asia sure. ALL of their ISPs seem to use Speedtest dot net as a standard. and they're obviously bribing Speedtest to get the results they want.
but AFAIK speedtests to USA servers are still kind of accurate... as in they're definitely much lower than the expected 100 mbps for me. i'm suppose to get 500 mbps but i am limited by hardware and USA bandwidth that is very obviously throttled.
Ppcc got a reaction from CA3LE in How to get Internet Companies to recognize testmy.net