Very interesting. I had assumed I'd buy a 13" Pro as a personal laptop replacement for my 2011 Air when they updated the keyboard. However, when the 2020 Air dropped, I snapped one up because it ticked all the boxes, and I really don't need the "power" of the Pro, especially given its presumed expense. I bought a loaded Air with 512gb which was I think $1650. Speccing out the Pro, the pricepoint for a similar machine…
Isn't that just the difference between DDR4 and DDR3?
Edit: Yes, I just confirmed that the last generation of MacBook Pros used DDR3 memory, whereas these new ones will use DDR4, so that's why there is such a big difference in speed. The new ones run at 3733MHz.