TBH the best measure of power or to gauge how fast a car is, is via the race track. Either circuit or drag - both will paint the best picture. In terms of just outright power, trap speed at the drag strip will not lie. Besides....clap clap if somebody has a powerful dyno sheet, but if they can't translate that into a good time or trap speed, then it's irrelevant. I'm willing to bet that there are barely any Celica's here that can hit an E.T. in the 13's, let alone trap more than 102mph, let alone have a meaningful dyno that could suggest it even on paper.
What I'm getting at, is who cares - just ignore those who want to live in their little bubble and create a false following. If others want to believe them, then cool, let them. If you know better and can do better, then show them how it's done instead.