To be fair, Zion has been out all season right? The Pelicans' coaches/players have had to prepare and create strategy all season with him absent from the lineup. The Suns just lost Booker after him making a significant contribution to them being the #1 seed.
I'm a Mavs fan and we lost Luka to injury in game 82. I haven't been as confident of the Mavs chances against Utah with him sitting on the bench. But he needs to sit if not 100%. His long term career is more important than this 1 playoff season.