Good argument about Perdi and Vitinha I guess.
Here are some more from my pov:
Vitinha is a much more consistent performer never looks gassed, maintains intensity throughout games, rarely sulks, has a great shot, is great at ball shielding and retention, has good vision and great long passing, as well as better overall passing accuracy (arguably safer passing mostly, so this might not tell us much)
Pedri is more creative, has incredible calmness and dribling ability. His vision is superb, his tiki taka game is top level and is also a good driver of the ball, some times. has the occasional good shot.
But he tires sooner, often gets lost in games, doesn't maintain 90 min performance, is too casual too often, offering no aggression for a midfielder.
that's my overall assessment.
Pedri is top top class. and both have good arguments, so it's a question of what a team needs and what we prefer to see. I believe Vitinha is a player that would surely be better for us, for all the above reasons.