If I were that hiring manager I would have the wisdom to know that this provides no signal whatsoever of how successful those people would be on my team.

Edit to add: The kinds of pressure experienced on the job are not at all the same as those experiences during an interview. "Doing well under pressure" is not a generic skill. Someone who freezes up during an interview may be the coolest head in the company while restoring a database backup during an outage, and vice versa.