Even though I don't like him I have to admit, Puigdemont does know a lot of languages (Spanish and Catalan obviously, but also French and English). He seems to be very good with languages, I wouldn't be surprised if he picked up decent German in 2 years or so.
Meanwhile, the Spanish PM... yeah, nothing. Not even Galician! (no Spanish PM has ever spoken a foreign language in fact, though Aznar did learn English after he left)
Pedro Sánchez must be the first Spanish PM in the present democratic period who is fluent in English. Sánchez co-religionist Juan Negrin, who led the Spanish Republican government during the Civil War, is probably the most multilingual of all. Negrin was able to speak German (he studied medicine at Kiel and Leipzig universities), French, English, Italian and Russian... and apparently he was studying Chinese during his final years in exile (Negrin died in Paris). I am certain that Sánchez is more skilled than Puigdemont in the Shakespeare's tongue, but the Catalan politician also speaks some French...