Or, one person could look like he's clutch, when it was really the other guy choking.
I have no issues with people saying, "that was a clutch hit." or "Man the Patriots really choked in that game!" (LOL).
I do think there are mental and emotional issues involved with high pressure situations, and how players perform under these circumstance can certainly be influenced by these factors.
My issue has just been about assigning definitive labels to players based on small sample sizes that are usually associated with playoff numbers. Then, even if the sample size is large enough, it is hard to prove conclusively that the results are based on a human factor or just randomness.
Papi seems like the best example to use, since we all are well ware of his heroics. To me, his playoff sample size is way too small to make any definitive judgement, but he was certainly on his way to showing (or maybe "proving" to some posters) he was "clutch". Let's look at his larger sample size of regular season "Late & Close" numbers. One would think that if Papi was really "clutch", he'd have equal or better numbers than his career high in Late & Close situations( Plate Appearances in the 7th or later with the batting team tied, ahead by one, or the tying run at least on deck). Here is the data:
Career OPS: .931
Career Late & Close: .870 in 1451 PAs, which to me is at least very close to a valid sample size number.
One can argue he was facing better pitching, so we can expect a player not to do better than the norm and maybe still be called "clutch". I get that point, but he's 60 points down. If I wasn't a Sox fan, I might use this as evidence to say his playoff numbers are just random numbers, and that nobody can "prove" he's "clutch".
BTW, he's .942 in High Leverage (1665 PAs), which could be used to prove he "is clutch" after all.
All this data is enough to make your head spin, as some seem to contradict the others, but all in all, I'd say Papi's numbers in high pressure situations during the regular season look pretty supportive of his playoff numbers (.947 in 369 PAs).
If any ML baseball player can ever be definitively called "clutch", it would have to be Papi. I just think it's hard to prove when looking at it from a statistical probability standpoint and sample sizes that are not large enough to be valid.
I know one thing, I was always glad he was on our team, especially when it counted. (Same with Manny.)