I agree with this. Although I think Tevez has the qualities to play for a team like Madrid. I see Morata developing slowly but steadily over the next 2-3 seasons, and therefore probably not having Real Madrid exercise their buyback.
Actually, I'd compare him to a Cavani probably, in terms of playing style and I'd place his max level probably about the same, which would be just below the very top tier of players imo. I think he very likely turns into a 20-25 goal a year player, which would be just below that Cavani level of 25-30. He has all the tools to be dominant, if he develops a little more physicality, and his mentality continues to improve with regular starting time. Morata is 22. Cavani score 14 league goals in 35 games at 22 and 13 in 34 at 23. It wasn't until his 24 year old that he really took off with 26 goals in the league and 7 in Europe. Morata has the rest of this season and next before his 24 year old season, which is probably the make or break season for him.
At worst, I think he becomes a Higauin level player.