Yea, it's clearly SP's, like always in movies.
Kishi only does sketches which they use as references and downgrade them in the process. :lol
Not as obvious as you would think.
The vanishing Rasengan is Boruto's biggest perk, but it's edge comes from the element of surprise, if you know how the jutsu works you will see it coming. Sharingan + CES is a pretty good combo, and if she lands a hit Boruto's done. Same goes for Sarada if she gets hit by the Rasengan.
It will come down to who lands their hit first, not sure which one of them is faster although Sarada's speed was specifically hyped, and she has Sharingan.
Boruto seems to have the edge by the end of Boruto movie, it's his movie after all, it would be embarrassing if Sarada was portrayed stronger. But if we add their storm 4 feats then Sarada is clearly more impressive.