that makes sense. interesting read here too:
Bore scoring on refurbished engine - PistonHeads
where they suggest piston and cylinder coating changes may also play a role. they also state that low rpm, high torque situations are the culprit (situations facilitated by improvements to variocam, and another reason why forced induction cars have such finite lifetimes); I presume your increased displacement builds offset potential damage from increased rod angle by using improved linings?