Windows 10: Why is the better of 2 Asus B450 motherboards cheaper in price?

Wanting to buy and reading here and there about motherboards I came upon these 2:
Asus ROG Strix B450-F Gaming vs Asus TUF B450M-Plus Gaming
I don't know if I can post links here but on a few websites, for example, versus, these 2 motherboards have similar specs, an equal overall score but one is preferred showing this:.
Why is Asus TUF B450M-Plus Gaming better than Asus ROG Strix B450-F Gaming?

• 800MHz higher overclocked RAM speed?
  4400MHz vs 3600MHz
• Supports ECC memory?
• Has USB Type-C?
• 1 more DVI outputs?
  1 vs 0
• 61mm narrower
  244mm vs 305mm

But this better board is actually about $40 cheaper. How can this be so? If they were from 2 different manufacturers I'd understand but they are not. Can anyone help me please. I was going to buy the more expensive one but then I saw this (based on what a vendor suggested) so now I am confused--totally.

OS: Windows 10 home, latest update:

:)

 

MSI Shows Off B450 Tomahawk and B450-A Pro Motherboards

MSI showed off two of its latest socket AM4 motherboards based on AMD's upcoming B450 chipset, the B450 Tomahawk and B450-A Pro. The Tomahawk is slotted in MSI's minimalist yet gamer-grade Arsenal Gaming series, and has a clean look, with a feature-set that doesn't exceed that of the chipset by much. Slick new VRM and chipset heatsink designs which debuted with Intel 300-series Tomahawk boards, make their appearance here. There's just one M.2-22110 slot. The B450-A Pro is part of MSI's mainline motherboard lineup, and targeted at system-integrators, with a similar feature-set to the Tomahawk, though slightly built to a cost.

 

Asus Z370 Maximus X Motherboards

The 9th gen processors that are currently available is still the P0 stepping and will eventually be replaced with the new R0 stepping processors.

Here are the screenshots I took from Gigabyte's website




Gigabyte redacted the new R0 processors from the list a day later.

 

Problems reconnecting Ethernet after waking from PC sleep

Motherboard is an ASUS Prime B450 Plus. OS is Windows 10 v. 1803, build 17134.765. Will try suggested steps and reply again in follow-up post.