I would have picked them differetly:
1. Thorn in my side
2. Happy now
3. Love's the only rule
4. Superman Tonight

WWWB is a great song that I love but it's in no way single material as far as radio goes.
They could have done the different singles in different formats thing bands like Nickelback do with their albums.

Release Love's the only rule as leading single.
Then as a second single release Superman for pop radio and Thorn in my side for rock radio. I'm no expert it's just a strategy that could work for them since their albums cover different styles.....