If they didn't intervene these two wouldn't even be candidates.
'They' want two traits - someone that can easily fool the public, but also someone that can be easily controlled.
It's a rolling process - one of the purposes of Bush Jnr was to appear so incompetent that he made the next president, Obama, look like a superhero in comparison.
The president may agree to work for the conspirators, or it may be through mind control ie via pain/drug hypnosis and other methods.
If it was a genuine level playing field, ie Ron Paul received as much media support as other candidates, he would have been the president long ago.
Unfortunately there is also the very realk chance that Ron Paul is also a puppet, being used as a red herring.
But to answer your question, Obama would defeat Romney easily in this election.