LOL Blackout did not span bigger hits than Back To Basics. Hurt has stood the test of time way more than any of the blackout singles. Britney has been outshined many times in her career. Deal with it.
Gimme More peaked higher on the Hot 100 than 90% of Xtina's singles. The last time Xtina had a Top 3 single was in 2002.
Xtine songs showcase more vocals. Which is why they are widely covered in Reality singing competitions. Imagine someone covering "Toxic" on X Factor/The Voice/AI
LOL Blackout did not span bigger hits than Back To Basics. Hurt has stood the test of time way more than any of the blackout singles. Britney has been outshined many times in her career. Deal with it.
"Gimme More" went #1 in two more countries than "Ain't No Other Man" and reached Top 10 in the same amount.
Child please. A lot of people didn't even remember the "it's Britney bitch" line until Scream and Shout. And yes, Hurt has stood the test of time better more than any blackout single. My main point is that Britney's been overshadowed many times (including Xtina) and that not always being the #1 artist means you're a fading has been. Anyhows, good night.
So you think it's fair to compare two pop stars when one is 15 years into her career while the other is 5 years into her career? 
And an AMA's performance. 
But, still, for a Top 5 radio hit, it should of scanned more than 2M. 