Loop Quantum Gravity?

I have taken a look at loop quantum gravity, and have pondered whether or not that this theory might be better than string theory because it defines the quantum composition of gravity and time. As the geometry of space-time is the manifestation of gravity which is thought to be caused by the graviton which is only hypothetical, and if it does exist is thought to be massless. In order to detect a graviton it is hypothesized that you would need the best possible detector with a mass the size of Jupiter placed in close orbit around a neutron star, and maybe under the most favorable conditions once every ten years would you be able to detect a few gravitons. Though loop quantum gravity does present a major unanswered question in physics. So let me know what you think is better loop quantum gravity or string theory?