A swiss knife does a lot of things, but doesn't excel at any of them when compared to specialized tools that do one specific thing.

The knife is pretty good and keeps its edge, but you can get a knife that's larger and locks. The can opener works great, but it's miles behind an electric can opener. The corkscrew never failed me, but it's not as comfortable as a two-step lever corkscrew. And so on.

Anyway, I think the analogy still holds. Any system that's built for multiple purposes will lose out to another, more specialized system built for a single purpose. Of course, this more specific system cannot perform all the other tasks.