Clearscore vs Experian: The Truth Behind Different Credit Scores

I believe Clearscore reflect our Equifax credit score and report?

Can you explain why I have multiple active credit accounts showing on ClearScore but some of them accounts don’t show on Experian If ClearScore uses the data from Experian?

fake app

My Experian rating is more than double that of ClearScore. I'm very confused about this, how can the scores vary so wildly?

ClearScore takes its applications from Equifax, not Experian