Caldera/Goenaga should have the clearer “P1-ready” blueprint: more stable first-ball patterns, heavier bandeja/víbora control, and better conversion once they own the net. Rodriguez Abajo/Canovas can compete by accelerating tempo and forcing uncomfortable transitions, but over a full match their error management under pressure is likely the limiter. Slight-to-moderate edge to Caldera/Goenaga in two tight sets if they start well and protect serve games.