"Pujol did such a good job that when the invasion happened on June 6, Hitler was convinced it was a diversion"
Makes it sound like he achieved the deception single handedly. It was a tiny bit more involved than that. Operation Fortitude[0], included creating an entire dummy army group (1st Army Group, commanded by Patton) with regiments of inflatable tanks, landing craft and squadrons of dummy aircraft in the right locations for a Calais invasion. Also significant fake radio and telephone traffic to be noticed and intercepted. It was a huge, ongoing, disinformation campaign and enormously successful.
Pujol was a fascinating tale, and played his part, but it was a small one.