When playing movies, can the Triton 2, supersat 60c, supersat 3, when set up correctly be played at reference levels?

That would depend on how far away the listener is (volume drops off exponentially with distance) and the overall size of the room, and whose reference level spec you are referring to - but in general, with enough power (200-300 watts/channel), the answer is yes.

That said, the THX reference for subs, for example, is (I believe) 105dB at 20Hz in a 3000sf room! The Triton Two will not produce 105dB at 20Hz at the listening position in any size room, but I believe a pair will produce that level in a typical size room at 25Hz, which is pretty darn impressive.

So, the best answer to your question is probably, "it depends".