Did you deep dive into this? Given the amount of downvotes I have I’m sure you weren’t the only one if you did.
About 30 percent of developers have no degree. Which means… if the average graduate of CS is 130, how low does the average swe without it a degree have to be in order to bring it down to 110?
I mean I spelled out the math. Dear readers, Draw what conclusion you want from that while asking yourself: “Do I have a degree?”
I will say that iq varies heavily across schools as well.