Well Beyonce Makes her own hits as opposed to just hopping on ones someone already made so her.

.

MLJ & SS are not her songs nor are they impactful

Makes her own hits as in steals credits from her writers?? Oh yea I agree with you on that

Beautiful was bigger than any Beyonce song in the 00s, and Moves Like Jagger was bigger than any Beyonce song in the 10s. X clearly wins.

People still remember Beautiful and Hurt, so Christina.

Say Something is Xtina single - the original version without her was flopping hard and was barely @ 45k

-

Beyoncé.

Wrong, they're counted just as much as her songs as the other artists.
If Say Something is not counted as her song, then it's the same as it not counting as AGBW's song has it has equal billing.

Xtina's biggest hits according to Billboard -

01. Moves Like Jagger
05. Say Something

- http://m.billboard.com/entry/view/id/97773

Say Something's another song bigger than every song in Bey's discography. It went #1 in more countries than Crazy In Love!

I screamed
Now you must know that's a lie

you know what.....
it's best to just leave it alone because if you truly believe that you are out of touch with reality

bye.

Xtina, in the 2000s.

Bey was female artist of the decade tho, wasent she..

So her

Christina thanks to her hit features. Bey walks away with tour gross, album sales, impact, etc. so it's not like it's a big deal to give Christina her props where it's due.
Only because Billboard used a formula that relies heavily on radioplay, which is a crock of **** when Beyonce paid for four of her biggest radio hits (CiL, Baby Boy, Me Myself and I and Naughty Girl). Bey sold less than 10M albums in that span, too

Really tho? There has been tons of controversy/heat about Beyonce hijacking writing credits, music video choreography, performances, etc.

I mean I like Beyonce and think she's very talented but let's not pretend here.

Beyoncé for anything and all things 2003+, Xtina's only gotten hits since 2009 through features so...

Beyoncé. Christina hasn't had a hit in years.

Beyoncé.

I mean, she has Crazy In Love, Baby Boy, Check On It, Irreplaceable, Beautiful Liar, Single Ladies, If I Were a Boy, Halo, Sweet Dreams, and Drunk In Love. Christina has Beautiful and maybe Ain't no other man.

Well Christina was the 2nd best selling singles artist of the 00s behind Madonna, so her.

As for the 10s, Christina again. Say Something was just certified 4x platinum, and her features still count towards her overall record sales, so taking that into account X wins by a long shot.