I'm a Bey stan, but I'm also a HUGE fan of Rihanna, so I'll do this as open-mindedly as possible. It's going to be difficult...
01.
1+1 vs. You Da One
02. I Care vs.
Where Have You Been
03. I Miss You vs.
We Found Love (feat. Calvin Harris)
04.
Best Thing I Never Had vs. Talk That Talk (feat. Jay-Z)
05. Party (feat. André 3000) vs.
Cockiness (Love It)
06. Rather Die Young vs.
Birthday Cake
07.
Start Over vs. We All Want Love
08.
Love On Top vs. Drunk On Love
09.
Countdown vs. Roc Me Out
10.
End of Time vs. Watch n' Learn
11.
I Was Here vs. Farewell
Beyoncé: 7
Rihanna: 5
This wasn't easy...
On the whole I think 4 is a more cohesive and memorable album, but there's absolutely NO DOUBT Talk That Talk is the more commercial smash.