12 Years For Rama, But One Day For Ravan

To retrieve his wife from devil Ravan, god Rama sought the help of Hanuman, a monkey god. Hanuman agreed to help Rama bring his wife back on condition that god Rama in turn help him (Hanuman) to kill his twin brother prior to undertaking the mission.

It took more than twelve years for Hanuman to build a bridge and accomplish the task while Ravan just took Sita and flew to Sri Lanka in just one day's time. Where is the bridge that Rama built? Who is more powerful - God Rama or devil Ravan? Would a god seek the help of another god to murder a third god?
*  If Hanuman could fly carrying big mountains, he should have in the first instance carried and flown god Rama to Sri Lanka, which would have resulted in early rescue of Sita.

*Who knows what Ravan might have done to Sita during this period of twelve years? Definitely a devil would have done only "devilish" things!

Before helping god Rama, Hanuman made Rama shoot his own twin brother in the back and only then did Hanuman help god Rama. How can a "god" indulge in such a criminal act for personal gain?