Worth doesn't always correlate against size. Worth is what someone is willing to pay for something. Tesla may be overpriced but to disregard Tesla's value based on a size comparison is ill-conceived.
We're talking about size here. Supposedly the CEO of a $50 billion company is too busy to concern himself with a lowly intern. But that $50 billion company is actually pretty small, just with a disproportionately high market cap.
But also, hell yes does worth correlate with size. It's only in postmodern Silicon Valley economics that a company with twenty employees and no revenue can be worth a billion dollars. All the standard ways of pricing a stock I know of take size into account, either directly or indirectly.
You are talking about size. The person you're replying to was obviously talking about market capitalization. It'd be nice if people talked to each other instead of talking past each other.
BTW, the standard ways of pricing a stock includes growth potential, which is why Tesla has that crazy valuation. It's totally fine if that's not the valuation technique you prefer, but it exists.
