The stat disregards hits like his game winner last year in April and his game winner against the DBacks in 2001 WS.
That being said I would still much rather have a Ortiz 8th inning blast than an Arod 3rd inning blast. Both are important IMO, but the late inning play is the stuff that stays with you psychologically. If Ortiz never gets another hit in the 8th for the rest of the year, I would still intentionally walk him with first base open. That's just straight up honesty.
Ok that's more sensible since we're talking about a stat that basically measures a hitter's ability to drive in runs. This is something I don't feel jeter has ever been good at, whether it be in the first inning or in the 9th. Why do I still label him clutch? because he is the one who is scoring the runs for the people who get the clutch hits. I don't know Johnny Damon's stat last year when applied with the same formula but it probably isn't that high either. However, someone had to be on base for Ortiz to succeed in that type of situation.
Driving in runners is just one part of being clutch (albeit a huge part), but there are many other things that makes one clutch. Just remember, the clutch RBI guys can't be clutch if the guys ahead of them arent being clutch by not being on base.
I don't know Jeter's OBP after the 8th or 7th or whatever, but it seemed to me that he was a part of every big rally in the last 10 years.