Seriously? You must be the only person I've met who would consider Bruce Pearson the talented redneck baseball player, Travis Bickle the low-key cab driver pushed too far, Mike Vronsky the dead serious Russian-American army Sergent, Vito Corleone the rising young Italian mobster, Jake LaMotta the out of control brutal boxer, Rupert Pumpkin the eccentric obsessed fan, Leonard Lowe the naive sweet recovering coma patience, and Dr. Frankenstein's tormented creation to all be "the same character" and the same type of performance from De Niro. Everyone else feels that's an INCREDIBLE acting range he had during the 70s, 80s, and 90s.
Unfortunately, you could make a good case that he's "phoned it in" SINCE then, and has been content to make silly mafia comedies and forgettable action movies for the last decade.
Bottom line: De Niro needs to get back to making real movies, and Scorsese needs to get back to casting real actors.
I will admit to not seeing those movies. Mostly because the movies I have seen De Niro in have not impressed me. I really can't even remember the movies I've seen him in because he's left no lasting impression on me.