Ok, so let me revise that. It is normal for your credit score to be different from different suppliers (EXP vs TU vs Fair Isaac, etc). There is no one universal exact credit score model that everyone uses the same, and thus everyone can come up with a different number.

I seem to recall in the past some credit scores being on a different scale, too, like not all of them having a max of 850. I don't know if that's still true.