Several years ago, I bought a beautiful SLQ in a PCI slab. They had it graded felt that it deserved better.Was weary about buying it because PCI has a bad rep. I bought it anyway. I invested $150 because I like the rainbow toning.I sent it off to PCGS last year and it came back 64-FH It just goes to show that sometimes you can get a real bargain by not overlooking the small guys.
Being wildly off from grades isn't a positive. Just because a grade is lower doesn't make it right or better nor does a single example disprove widespread trends