If Manny Pacquiao and Floyd Mayweather had fought in 2009/2010, would it have generated the same amount of revenue—around $400 million?

If Manny Pacquiao and Floyd Mayweather had fought in 2009, would it have generated the same amount of revenue—around $400 million?

I'm just curious about it. I've always felt that, even though they fought after their primes, they needed that six-year gap to become well-known worldwide, ensuring it would be the biggest PPV event in boxing history.