How so? What do you believe you've seen in his performances so far that point to Nole 1.5 over 2.0?
Yeah, I'm curious for Insouciant to expand on his/her thoughts. I've watched the performances too and don't think you can tell much either way from them. He played at his absolute best ("2.0") in his match vs. Ferrer in Abu Dhabi. His next match vs. Almagro wasn't as great, but Almagro was at his absolute best, and Novak still won. Then the latest match vs. Seppi was just kind of whatever - not all-out dominating but perfectly fine. I noticed that he's trying to play forehands and backhands down the line more, which is an improvement over his disuse of them in 2012.
It's also hard at this stage to disentangle diminished-effort exho play from what his "real" level is. The idea that he's going to have another 2011 is probably a pipe dream anyway, but I'm not sure if his recent play gives us clues either way, really.