I realize how big Gaga was during The Fame Monster era, she was huge. But Britney was on a whole other level.

all of this

My thoughts exactly!!!

Here in the UK, Britney was MUCH bigger during 1999 than Lady Gaga was in 2009. In my country Lady Gaga got a bit overshadowed by the Black Eyed Peas when she was peaking tbh.

Britney at her prime ***** on every popgirl that is out currently.

Britney, I love both girls but Britney in her prime was everywhere, tv, newspapers, radio, magazines, dolls, everywhere!

Gaga

Not the BEP!

Teach 'em

Britney was the more successful musician.

What's so funny? Britney peaked after her first album.

Britney

The Fame: 2.7 million and still selling well (in a far worse sales climate)
BOMT: 900k

Nostalgia

Gaga during The Fame/TFM was far bigger in Europe than Britney ever was here. Britney was far bigger in the US and probably Latin America. Gaga was bigger in Asia and Europe.