tRA doesn't necessarily show true talent level. As the primer explains, the rates can regress a lot so tRA* is the best measurement of true talent level (of a season).
tRA* is not a measurement of a pitcher's results per se, but should be seen as the system's best estimate of a pitcher's true talent level based on his stats in any given year at any given level. tRA* does not consider a pitcher's statistics from other years and leagues.It's flawed. It also only considers offense for position players.And another is why does it seem like VORP is used so rarely? I really like the stat but it seems like its just never used.
Whoever is watching the game data really. Not sure though.