Please know that this is in total respect to the previous posters and, above all, to Rod himself.
But the show IS the same. The show has been the same for 32 years. There's only one human being for which the show could even remotely not be the same without -- Bob Barker.
The show -- the games, the contestants, the fantastic prizes, Bob -- has been the driving force since Day 1.
Going on without Johnny Olson was, conceivably, a bigger "can the show continue" challenge that going on without Rod will be. (I know, I know. That's sacrilege to some)
I've been watching TPiR since I was 11 and spent sick days home from school relishing in the glory days of daytime game shows. I saw how the show moved on after Johnny without hardly skipping a beat.
It will do the same now.