Which relevant pop girl has the bigger peak in terms of their music career?

Avril had a higher peak but Beyoncé has the longevity.

Let Go was bigger than any Bey era.

What kind of question is this? Avril of course

Let Go is bigger in a worldwide scale than any Beyonce album cycle but of course, Beyonce has the bigger career overall.

Avril

Sales wise, Avril.
Overall, Bey

Bey of course

Bey

Worldwide I'd say Avril but in the US maybe Beyoncé.. idk that's close
However Queen B has the overall career and legacy

EDIT: Oh wait 'relevant' pop girl? Bey

Is that a joke ?
Y'all are doing too much with Avril, I swear

I mean, Avril's sales peak with an album is 16,000,000 while Bey's is 11,000,000
Bey had much less impact and influence in her peak when compared to Avril's peak

In what world? Beyoncé had the longevity but she never had a bigger era than Let Go so let's not.

Beyoncé.

17 million
other says 20 million

I catch that shade sis

Obviously Avril.

Avril. Beyonce's success is very overrated.

Avril

Avril was bigger. She was everywhere when Girlfriend got released