If you have driving experience with those high power cars, ok fine, YOU may be safe.
But the cost doesn't change. And I would bet whatever cars you are used to, are cheaper to hit 400whp reliably than a Subaru. I can't think of many cars that are more expensive to get to 400whp, reliably, than a Subaru.
Nowadays your best and easiest path to 400whp is a used 2012 mustang, an intake and a reflash. Boom. 400whp. Hell a bolt on magnussen supercharger a catback, a pulley a boost a pump and some tuning (under 10k) will put you over 600whp pretty reliably.