Moz vs Semrush Keyword data - Huge volume est variation?!

Hi,

I have rarely had access to several of the tools at the same time however and what bazzles me in the recent keyword research projects im doing is the very significant difference in search volume estimations between Moz and Semrush.

Am i comparing apples and pears here? If so please let me know. Could it be because Moz defines en-Gb and En-Us in their search for each region and it will only show results in Uk that has "en-Gb" as language pack installed and disregards other english queries in that region in english that does not? I will attach a couple of images from Semrush and Moz Pro using the keyword "Remote Work" and "Antiperspirant" as an example. I will be comparing the results for Uk and Us.
I do understand looking at topics instead of keywords is more relevant and have read the following arttile from ahref. Still I would like input as to why you think their volume differ so significantly, is it simply because they scrape differently?

https://ahrefs.com/blog/keyword-search-volume/

https://imgur.com/a/cKcPTfT