Sol easily outperforms Fable on every task I've tried it on.

That's not my experience and I suspect it's not most people's experience. Out of curiosity, what's the hardest task you tried?

I can't speak for others but I have a feeling you're in the very small minority with this take.

You could say Sol is faster and cheaper and that's true. Outperforms Fable? Impossible to believe without hard evidence.