Sub 6 in many areas may not be much faster than LTE. MmWave’s short range, and also because obstacles of any kind can dramatically impact its performance. Obstacles include buildings, trees, cars, etc, makes it impractical out side of large pop areas.
Next year, Verizon and AT&T should start using C-band in some areas (they were the two major purchases of the spectrum during the auctions). These new frequencies will greatly improve their 5G signals and finally allow the two to give T-mobile a run for their money in the sub 5G world.
I have not been able to find out if the Exynos 5123 modem, used in the Pixel 6 phones is capable of receiving C-band (I believe n77 or n78 bands). (If anyone knows for sure posts it.)
I do know it is an older modem (similar to Qualcomm X55) and not as up to date as the X60 Qualcomm (X-60 modem can connect with C-Band). Older modem could also affect current sub-6 performance compared to a newer modern modem. (I AM NOT KNOCKING THE PIXEL 6; IN FACT LIKING THE LOOK AND FOR ME, WHERE I LIVE BY THE TIME 5G WILL ROLL INTO THE AREA, PIXELS WILL BE UP TO 10 RUNNING ANDROID 17. JUST STATING SOME INFORMATION.)