Semrush vs Kwfinder

Hello all,

At the Mods indication I am opening a new thread rather than bumping an old one even though it was on the same subject with no replies or advices/solutions provided.

So I am in the process of getting one ready built site for CPA. The developer has sent me the keywords and when I look them up in KWfinder it sums up 2.7k volume with average 18 difficutly. However when I look them up with SEMrush I get roughly 1k volume and average 55 difficulty. Who should I trust now ?