Are you saying then that neither account has prophetic meaning?
The two accounts are of the same event. The narrative has prophetic meaning since it pointed to events in the near future from Jesus and His disciples’ perspective. "This generation will by no means pass away till all things take place." Jesus foretold the destruction of the temple and the end of the old covenant system, which we know happened in AD70 when the armies of Rome trampled Jerusalem underfoot and leveled the temple. It has not prophetic significance from our perspective, Jesus was not speaking directly to us.
The futurists need to jump through all kinds of hoops to resurrect the Roman empire and rebuild the temple so it can be destroyed again simply because they deny the parallel between Matthew 24 and Luke 21.