No, they don't. The difference between commas and ellipses is not at the length of the pause. Commas don't necessarily correlate to a pause at all in many cases, and separating the verb from the subject with a comma is straight-up wrong. I hate to link to sources of authority in stuff like this because it's patronizing as hell, but I promise you can look this up.

I know somebody told you that's it's about conveying speech pauses, and I'm sorry you had to find out in the middle of an Internet argument where you tried to show up a pedant, so now you're entrenched and will refuse to back down for all eternity, but... yeah, no, that sentence is wrong.