I always said that both Landry and Beckham were going to be outstanding pros. In fact, I loved Mettenberger and Jeremy Hill also. LSU's offense was an NFL offense in college. They're all going to be outstanding pros and have proven to be thusfar.
I always said Landry was just as good of a "football player" as Beckham was. However, the things that make Landry a special player (Huge-strong hands, toughness, competitiveness, work ethic, desire, passion, love of football) Beckham has all of that too. Except he has something Landry doesn't, which is speed. Beckham always created better separation than Landry. Landry made tougher catches in traffic... because he was always covered better due to lack of speed, and not being able to create the type of separation Beckham can create. Landry had a better understanding of defenses in college than Beckham, which is why Landry was able to move around and be featured in the slot in addition.
They're both great players. But there's a reason why Beckham was drafted higher. Speed.