Here's some tea. Performance of official follow-up singles to US Billboard Hot 100 #1 singles since 2013.
Artist #1 Hit Follow-up Peak
Bruno Mars Locked Out Of Heaven When I Was Your Man 1
Macklemore & Ryan Lewis Thrift Shop Can't Hold Us 1
Taylor Swift Shake It Off Blank Space 1
The Weeknd Can't Feel My Face The Hills 1
Justin Bieber What Do You Mean? Sorry 1
Justin Bieber Sorry Love Yourself 1
Iggy Azalea Fancy Black Widow 3
Meghan Trainor All About That Bass Lips Are Movin 4
Taylor Swift Bad Blood Wildest Dreams 5
Bruno Mars When I Was Your Man Treasure 5
Lorde Royals Team 6
Taylor Swift Blank Space Style 6
Macklemore & Ryan Lewis Can't Hold Us Same Love 11
The Weeknd The Hills In The Night 12
Katy Perry Roar Unconditionally 14
Adele Hello When We Were Young 14
Katy Perry Dark Horse Birthday 17
Miley Cyrus Wrecking Ball Adore You 21
Robin Thicke Blurred Lines Give It 2 U 25
Pitbull Timber Wild Wild Love 30
Eminem The Monster Headlights 45
P!nk Just Give Me A Reason True Love 53
Wiz Khalifa See You Again Burn Slow 83
OMI Cheerleader Hula Hoop 116
Pretty much all of the songs that peaked worse that Katy's are terrible too.
