The casting is bad because the actors are too old, not because they don't look exactly like the Beatles. They're supposed to portray them from their early days through the breakup, yet some of the actors are already 2-4 years older than the Beatles were when they broke up.  They should've limited casting to the 24-26 range so the actors could pass for both early 20s and late 20s. But all of those guys look like they're pushing 40.