The BICEP2 results, unless I am mistaken, are a measurement of CMB polarization, i.e. photon polarization. That is, taken at face value they say nothing about gravity directly. Now, we can start to make some assumptions in order to see what this result tells us about other physics like gravity. These assumptions fall into 2 very different categories: (i) very general statements about the nature of quantum mechanics, field theory, and quantum field theory and (ii) specific field-theoretic model dependent assumptions. Assuming this is true,
(1) What does the BICEP2 results say about gravitational waves? And what assumptions did we need to make in order to make this statement(s) (general or model dependent assumptions)?
(2) What do the BICEP2 results tell us about quantum gravity? And what assumptions did we need to make in order to make this statement(s) (general or model dependent assumptions)?
(3) Lastly, are my questions (1) and (2) actually the same question?