how come netbsd is so high-performant?

[Mayuresh Kathe <mayuresh%sdf.org@localhost>]

in spite of having a "hardware abstraction layer", how come netbsd is
so much more higher performant than other bsd systems?
the whole system while using at the console feels so zippy and so
responsive that it's a joy to use, especially to someone like me who
is coming over from openbsd and has played around quite a lot with
freebsd. kudos to the netbsd developers for building such a system.