Exactly.
Its greatly overrated on how difficult NEs system is.
Fact is alot of WRs that were still in a playing age, had their best year in their entire career in NE. Welker, Branch, Lafell, Reche Caldwell, Moss (many great seasons but he still holds a record for his 07 season in NE), Chris Hogan, David Givens (yes injuries ended his career but in 5 games as a starter for the Titans he had 100 yards receiving.)
The only WR I could find that outperformed their NE years was Jabar Gaffney and Brandon Lloyd. But they both outperformed playing for Josh McDaniels in the same NE system.