If the Minden to Manila ‘nader was tagged an EF4, the swath of destruction in Greenfield is nowhere close. That said, bad is bad.
That's not how it works though.
There's a good video interview out there with Tim Marshall, that explains all this much better. But he gave a version of it at his talk in 2023 at the Central Iowa NWA Doppler Radar and Severe Storms Conference, and has kindly let me use some of his PowerPoint deck for presentations to groups now.
He's a forensic meteorologist/engineer. He's been responsible for developing and updating the damage indicators with the EF-scale, and some in progress updates.
You can't just "eyeball" it. Shoddy construction, improperly installed, missing, old, etc etc can really make you vulnerable to much lower windspeeds.
"All walls gone," which is the quick and dirty explanation of EF-4, can actually occurring in a low-end EF-3 depending on construction.
Check out the lower bound values here on the single family residence damage indicators.
"Swab swept clean" can occur with estimated top-end EF-3 winds. You can't get an accurate EF rating solely from drone views.