The Focus might have a huge power advantage on paper, but the Fiesta can out perform it on the track and autocrossing. Only on very long courses would the Focus ST start to really do well, but the faster it travels on the straights, the more braking it needs to slow down. Braking is where the Focus ST can't hang with the Fiesta ST. Having been autocrossing and at the track with both cars, the less powerful Fiesta ST is far better of a performer. I would not bother trying to bridge a power gap that only exists on paper. People seem to assume the Fiesta ST is the underdog compared to the Focus ST, but that just isn't the case. Even off road, the Fiesta ST can go places and do things that the Focus ST struggles. Drag racing and top speed are really the only things the Focus ST does better, but nobody buys a sport compact for those things.That says they got almost the power and torque of a Cobb 93 octane tune with 91 octane gas in a stock car.
They either got a very very strong example or the dyno's correction factor is off.
Finicky or not the Focus has a huge power advantage, hopefully we will figure out how to bridge the gap.