My company does stack ranking, and my first performance review mirrors yours almost to a T. And the distrust that it has created between my direct manager and his reports is horrendous. He always prefaces his evaluations (discussed personally with each of us) with "I'm limited to giving Exceeds Standards to only two members of the group." Said group having 18 members. He's not required to grade any employees as Does Not Meet Standards, unless they truly do. But know that I'm lumped in at the exact same level as the remaining sixteen coworkers is extremely disheartening. This just encourages employees to quickly determine the firing line.
The minimum performance required to avoid termination.
The minimum performance required to avoid termination.