The pokemon is a spin off thingy.... and Im not sure smash alone can carry it above the PS4.
PS4 will have:
Spiderman
Red Dead Redemption 2
Call of Duty
Dragon Quest XI
Spyro Reignited triology
Shadow of the Tombraider
Battlefield V
Kingdom Hearts 3
Overall I think PS4 has stronger software than the Switch has, end of the year.