The crashworthiness and ballistic tolerance of the V-22 is literally decades ahead of the Chinook, basically because it was designed decades afterward. The Chinook meets the basic standards of a civil helicopter from 1965 or so, because the Army had no special standards for crew protection, crashworthiness, fire resistence or battle damage back then. The same can be said of the Huey, BTW. Literally all the changes that the Chinook has seen since then have been for performance or operational capability, but have done little in the survivability area.
The V-22 meets standards that are tough, similar to the Black Hawk or Apache.
That doesn't mean that either is able to take an RPG hit and keep on flying, but it does tell a bit about what would happen after the hit, regarding breakup and or fire.