Does your POI have mood swings?
That, too. Depression, bi-polar, you name it mental health wise can have effect on readings. Readers can't always see if a person has "issues". I know my POI has depression or something going on. I had a reading once and the reader was getting really spaced out and confused trying to concentrate on what he was thinking. She was honestly really struggling to get into his head, it can make readers disorientated.
I don't know if I necessarily agree with this, Star, Still Tired. My ex haissues like that and the readers I went to would always read "below the surface" and give predictions that would pass. I never found changing "in-the-moment" feelings (bipolar, depression, etc.) to have any impact on my readings. I feel it gives readers a bit more leeway to say, "Oh I wasn't wrong." But that's just been my experience.
To answer the question for OP; maybe one reader is fake, or less accurate than the other...?
I've found many times that ones who seem to be real, and I'd "connect" with, would later be proven to be fake, and that their guesswork and psychological tactics to guess were just phenomenal.