@Nippy I said the same thing yesterday, watching Rock in Rio I was like...
how the **** did RTW end up as the lead when End Of Time, Love On Top, and even Party all existed.
I think either of those could have given her era a dramatic turn, imagine had she released LOT as the LEAD single and then announced the pregnancy and performed it on the VMAs while it already had airplay and was coasting around 16 on iTunes.