That's very like the trajectory of Nobody's Perfect. Excellent fragmented intro and first verse with really nice minor-sounding build and a sort of ominous, slightly tense feel - then bursts into a bright sunny playschool swingy-armed chorus, and all the air goes out of the song.
Gah! That's even worse. Don't know why they shied away from building on the good bit. You start thinking "ooh this might have teeth!" and the dentures fall out. It's like a switch and bait.