For 30 years string theorists have said string theory is the only game in town. It is the only known consistent theory of quantum gravity. LQG has not been shown to have GR in the low energy regime so it is not been shown to be even related to gravity. The only reply I've seen is that string theory is not background independent whereas LQG is, so string theory is not a complete candidate for QG. Recently, http://www.icra.it/MG/mg12/talks_plenary/Freidel.pdf has shown that the newer Rovelli spinfoam models, which incorporate an immirizi parameter and reproduce canonical LQG kinematics apparently have a good semiclassical limit, it reproduces GR in the low-energy large volume regime, where GR has been shown to be experimentally verified, along w/quantum corrections at high energy. If these claims are verified, then will this new SF models be considered "quantum gravity" or is there still more work to be done before the statement "string theory only game in town" is falsified?