More important than the grade in my view is that Isles is a much better line than Superpowers. I mean what a beautiful, pure thing. Bouldering at its absolute best. Surely it should go straight on the radar of some foreign folk to come have a go.
Not that Superpowers isn't really cool, but it certainly has some minus points to it (bad landing, close proximity of rocks behind your back, slightly wandering top out, SHARP holds, etc.), such that it'd be easy to forgive if people aren't all that psyched for it.