Both players arrived in the Premier League for huge transfer fees, but it was Eden Hazard who instantly adapted to the English game.
He has been a joy to watch for Chelsea, winning individual accolades and a Premier League title, but this season has been disastrous by the high standards he set a year ago.
Lamela on the other hand continues to improve after a tough start in England. This is his third season at Spurs since signing from Roma, and the second under compatriot Mauricio Pochettino. Finally he appears to be coming good.
Comparing Premier League statistics alone - discounting Lamela's impressive Europa League hat-trick against Monaco - the Argentine has been a far more productive player than Hazard this season.
He has three goals and three assists, while Chelsea ace Hazard has not scored a single goal and has set up just two goals.
His progress is highly encouraging, and he has managed to make more of an impact on games than the Belgian with fewer touches of the ball per game.
There are still areas of improvement to make in his passing and dribbling where he lags behind Hazard, but the strides he has made this season is worthy of recognition.