Snark conquers all in 'Deadpool 2,' a superhero sequel that's more of the same

Even fueled by Reynolds, whose likability is practically a super power, a new director in David Leitch (“John Wick” and “Atomic Blonde”), charismatic new costars like Zazie Beetz (“Atlanta”) and Julian Dennison (“Hunt for the Wilderpeople”), bigger stakes (and more money to execute them), “Deadpool 2,” suffers from the sequelitis that typically threatens gimmicky gambles turned tentpole franchises.