By definition, it is. There are 30 teams.
And you keep saying, 'Heyward is not actually that good,' without anything to back it up. It's simply an opinion because we've been trained to see a player's value entirely on BA, HR, and RBI.
The difference, offensively, between Heyward and Stanton is 15-20 HR over the course of a full season. BA and OBP are very similar. So what you're saying is that 15-20 ABs sprinkled over the course of a season is far more valuable than Heyward's constant defense and base running.
Stanton is overvalued by many; Heyward is undervalued by many. Why? HR. That's it.