MW3: Confirmed 4x XP in Latest Call of Duty Offering

From COD Community Forum:

EliteKnight seems to be asking the right questions and actually getting answers to them from Robert Bowling.

When he asked: @fourzerotwo from the Prestige shop in #MW3 if you unlock 2x XP and there is already 2x XP on MP would you get 4x XP ?

Robert Bowling answered with: @RK1EliteKnight Yes, you get 2x whatever the current xp scale is. It just doubles the playlist's default for a limited amount of time.

So this confirms you have the possibility to rake in 4x the usual XP at certain points in the game.

This makes me wonder. What happens when you add the double XP time from PepsiCo's "Rank Up Your Game with Double XP" promotion, would you get 8x XP for a limited period?

Wow--8x XP at certain times..Holy Shit. Might encourage people to prestige more often--What do you think?