GamesRadar+ said that the teardown confirms the console's Wi-Fi antenna supports the new Wi-Fi 6 standard, which allows for a new maximum speed of 9.6 Gbps -- more than twice the 3.5 Gbps ceiling for Wi-Fi 5.
This means that Wi-Fi 6 routers can better distribute all that speed to a bunch of devices at once, and to maintain their performance over time. Of course, you need a Wi-Fi 6 router and if you have a home full of connected devices, there is a good chance you will notice the improvement. The Xbox Series X Wi-Fi antenna only supports Wi-Fi 5.
The PS5 has a USB-C port and a USB-A port on the front. The teardown video confirms the type-C port will support 10Gbps transfer speeds, and it confirms that the two USB-A ports on the back will too. The type-A port on the front is not as fast so plugging in an external PS5 SSD mean using one of the faster ports on the back. Xbox Series X does not include any type-C ports, and all of its type-A ports run at the standard 5gbps speed.
If you know that fast connection speeds will make a big difference to your play experience, you may want to lean toward PS5 -- but as always, the biggest deciding factor should be what games you want to play and how well each console plays them.
The Verge also notes the PS5 includes removable sides, dust catchers, and storage expansion.