I donno. Most great ideas fail and success rate is mostly dependent on execution. That is why I believe execution gets more weight than idea no matter how great the idea is.

A great idea with bad execution = failure

A mediocre idea with bad execution = failure

A super bad idea with bad execution = failure

However, you can take a semi bad or mediocre idea and execute the heck out of it = success.

So I would look at the success numbers. "far far more valuable" is too subjective. Using your example, I personally wouldn't get into an unreliable vehicle but a faster horse that I know for sure works.