Comparing apple's to apples hypereutectic pistons are more brittle then most forged pistons, which is reason to be leery in a boosted application. They won't be as forgiving on the tuneup...but of course can work if you're careful.

I think people get confused when we're talking about materials sometimes. A modern cast hypereutectic piston isn't in the same universe with an old cast 440 piston. A pro tru piston uses 4032 material which also has high silicon content of 12-13%, making it borderline hypereutectic. Also wouldn't be my first choice for a boosted motor.

Most race pistons are 2618 material which is less brittle and will tolerate detonation better.