#1 United States
#1 Argentina
#1 Australia
#1 Bahrain
#1 Belize
#1 Botswana
#1 Brazil
#1 Cambodia
#1 Canada
#1 Chile
#1 Cyprus
#1 Egypt
#1 El Salvador
#1 Guatemala
#1 Hong Kong
#1 Indonesia
#1 Ireland
#1 Jordan
#1 Kazakhstan
#1 Kenya
#1 Latvia
#1 Macau
#1 Malaysia
#1 Mexico
#1 Moldova
#1 New Zealand
#1 Nicaragua
#1 Paraguay
#1 Peru
#1 Philippines
#1 Qatar
#1 Russia
#1 Saudi Arabia
#1 Singapore
#1 Taiwan
#1 Thailand
#1 Turkey
#1 Ukraine
#1 United Arab Emirates
#1 Vietnam
Applause (#1 in 0 Countries)
And y'all thought I was trolling when I said Katy was bigger than Gaga WW.
#1 United States
#1 Argentina
#1 Australia
#1 Bahrain
#1 Belize
#1 Botswana
#1 Brazil
#1 Cambodia
#1 Canada
#1 Chile
#1 Cyprus
#1 Egypt
#1 El Salvador
#1 Guatemala
#1 Hong Kong
#1 Indonesia
#1 Ireland
#1 Jordan
#1 Kazakhstan
#1 Kenya
#1 Latvia
#1 Macau
#1 Malaysia
#1 Mexico
#1 Moldova
#1 New Zealand
#1 Nicaragua
#1 Paraguay
#1 Peru
#1 Philippines
#1 Qatar
#1 Russia
#1 Saudi Arabia
#1 Singapore
#1 Taiwan
#1 Thailand
#1 Turkey
#1 Ukraine
#1 United Arab Emirates
#1 Vietnam
There's no comparisson between Scream & Shout and Moves Like Jagger, Britney sings the chorus and appears througout the WHOLE video. Plus she got several #1 hits prior to it. Aggie's last solo hit was 14 years ago.