2013 French Open finalist David Ferrer says Carlos Alcaraz is an impressive talent and will surely be a big star, but he doesn’t want to compare him to Rafael Nadal. Like Nadal, Alcaraz became a Masters champion and a top-10 player at the age of 18.No player has done this kind of thing since Nadal so it shouldn’t be a surprise to see Alcaraz being compared to Nadal. However, Ferrer does not want to compare Alcaraz with Nadal because that could be “a great burden” and also “no one can overshadow Nadal.But I don’t like to compare them, because what Rafa has done is …