Those are a success indeed.
Same can't be said of other recent topscorers there like Vleminckx, El Hamdaoui, Dost, Alves. Last season's topscorer Finbogasson also having a difficult time in Spain so far.
Of course extremely talented players like Suarez will also excel in other leagues. Same probably will be the case for Depay, but just like Suarez he'll need some time to fully adapt after a move. In Holland, attacking players don't really learn how to deal with close marking and teams set up just to defend. Even bottom teams try to play attacking football, which leaves a lot of space for attacking players to work with and improve their stats. PSV in particular does a lot of damage on counter attacks. Once he gets to England and faces 10 Burnley players in and around their own box, he'll need to adapt.