Posted by MikeT23 on 9/19/2016 12:54:00 PM (view original):
As tec said, RBI is largely a product of opportunity. Player A has 4 wall-denting doubles in a game and 0 RBI because all came with the bases empty. Player B got two RBI on a Texas Leaguer with the bases loaded. He also hit three weak dribblers.
Again, a 380 ft flyball can be a deep fly out or clear the fence by 60 feet. But both may have left the bat at 101 MPH. That's pretty strong regardless of the end result.
The end result of an AB doesn't tell the full story when discussing power.
I pretty much completely agree with this, with a couple additional points.
I think there's two different ways to look at power. You can look at it Mike's way, or what I'd call scouted power. Velocity, distance, mechanics, backspin, etc that indicate a hitter is capable of producing significant value with the bat.
Then there's results power. Actually hitting for extra bases. Probably best measured by things like SLG, HR, Doubles, wRC+, etc.
I'd add that exit velocity doesn't always tell the full story. Zach Britton allows a relatively high exit velocity, but since most of the balls are driven directly into the ground, no one considers the hitters' results "powerful."