He has 7 in his career.
Not sure what time span the OP is though

The WBTCITW-sized slayyage.

Bruno debuted in 2010. So it must be this decade.

The Beatles released single every other week and album every other month in their early years. Rihanna and Ariana could never.

Yeah
They got like 10 #1s in 2-4 years I can't remember
They slayed albums too though
Over 130 weeks at number on one bb200

That's actually a misinterpretation of what was written; it may or may not be actually true, but this record pertains only to having the most top five hits since he got his first top 5 hit. It's not in relation to all of Billboard history. It just means that since he got his first, he's had the most to date.

Let me burn my copy of Doo-woops and hooligans

What not to get, we are talking about this decade, he got more top 5 hits faster than anybody else including Katy & Rihanna even though he has released fewer singles.

It's not their fault songs where katy is featured on doesn't go top 5

This is the list of Top 5 hits of the three of them by the way:

Rihanna (10 total, 8 as lead artist)
Rude Boy (#1)
Love The Way You Lie (#1)
Only Girl (In The World) (#1)
What's My Name? (#1)
S&M (#1)
We Found Love (#1)
Where Have You Been (#5)
Diamonds (#1)
Stay (#3)
The Monster (#1)

Katy Perry (10 total, all as lead artist)
California Gurls (#1)
Teenage Dream (#1)
Firework (#1)
E.T. (#1)
Last Friday Night (T.G.I.F.) (#1)
The One That Got Away (#3)
Part Of Me (#1)
Wide Awake (#2)
Roar (#1)
Dark Horse (#1)

Bruno Mars (11 total, 7 as lead artist)
Nothin' On You (#1)
Billionaire (#4)
Just The Way You Are (#1)
Grenade (#1)
The Lazy Song (#4)
Lighters (#4)
It Will Rain (#3)
Locked Out Of Heaven (#1)
When I Was Your Man (#1)
Treasure (#5)
Uptown Funk (#5 so far)


8/10 of Katy and Rihanna's Top 5 hits this decade being #1's though.

and that's the big difference