Ahrefs Vs SEMRush organic search is very off?

I took a picture of both services using the same exact site and I get totally different numbers for organic search. I took a picture but it looks like r/SEO does not allow pictures.

Ahrefs organic monthly search is: 17,891 /month

SEMRush organic monthly search for the same site is: 87,797/month

I understand they are two different services and this is an estimate of the traffic, but which one do I trust more? I understand a few thousand off but this is by almost 70,000. Am I missing some kind of reason that I can't think of?