Roberto Soldado used to be good. This much is indisputable. You can even see it in the stats. The fine folk at Statsbomb recently posted the above animated .gif that shows his statistics for his various clubs from age 25-29, which encompasses his time at Getafe, Valencia, and Tottenham Hotspur.
Look at that .gif. JUST LOOK AT IT. Getafe for a season: pretty good. Valencia for three seasons: excellent. High rankings in goals scored, goal conversions, shooting percentage. All really, really good. You'd want that striker on your club, wouldn't you? Aaaaaand then look at the Tottenham graph. Everything just falls off a cliff.
There's no rational explanation for this. It's almost unfathomable that a striker with the ability and statistics of Roberto Soldado at Valencia could come to England and be the complete opposite of what he has been for the majority of his career. But that's exactly what happened. Roberto Soldado came to Spurs, and Spurs broke him.
Excuse me while I go cry in the corner now.