Oh really? Who considered them "generational" talent. What does that even mean. Does he mean generational from a collegiate standpoint(and that's all you got to go by)? If that's the case, then Trent Richardson falls into this category
No Richardson wasn't a generational talent. He was the best RB in a bad year for RB's.

the guys you listed were generational talents.
Calvin Johnson (size, speed, ability), Andre Johnson (speed, elusive, catching), Fitzgerald (come on he was a beast). What does or did Richardson do other then be on Alabama run behind there talented line and be short and stocky with mid-range speed for a RB?
Tell me what Richardson excels at that a RB each and every draft doesn't also excel at? his strength, speed, catching ability, toughness, durability, big play ability what?