Whether or not Model 3 is mediocre is in the eye of the beholder. The continuous numerical and quantitative comparisons Sandy Munroe makes are not. Examples:

    - Numbers of fasteners in subsystems
    - Total length of cooling hoses
    - Total weight of coolant
    - Weight of the body in white
    - Efficiency vs. total energy of pack
    - Part counts

And this is just what I can remember off the top of my head. So whether or not you think Model 3 is mediocre, there are TONS of quantitative measures by which Model 3 is a long, long way ahead of their competition. Also, note that in some places, Ford and Volkswagen are by Sandy Munroe shown to be ahead of Tesla both quantitatively and qualitatively.

It looks like Sandy Munroe is doing a fair comparison based on sound engineering principles. On the other hand, I think you just don't like what he has to say with regards to Tesla.