if those were 6s and 7s he might've just got an inexperienced PSA grader being harsh on big names. The 'who grades tougher' debate is always funny to me. I've gotten 10s from both that were definitely not 10s, and I've gotten harsh grades from both where i cracked them, resubmitted, and gotten 10s. It's all just grader dependent.
100%. It's impossible to always be accurate since "accuracy" is based on someone else's opinion every single time. The only thing we can do is guess based on what we see. I also don't think it comes down to "tough" or "bad day graders". We just all perceive things differently. I appreciate the comment!