Tether vs. WiFi WAN on Surf soho MK3

Hello and Good Day to All.

I did a test today. Internet speed test.
Surf soho MK3 is connected to a Verizon hot spot (netgear AC791L) in tethered, and/or WiFi WAN.

In tethered, via. the usb 2.0 on the AC791L, and the Ssoho, I get much lower download and upload speeds.

If I connect the AC791L to Ssoho via WiFi, I have far better download,and upload speeds. Does this sound correct?

AC791L has excellent signal strength, and is within close proximity to the Ssoho.