Both games against Phoenix have been close but both have been in Denver. I'll better be able to answer the question after Denver plays a game in Phoenix.
Nene should return sometime soon. He has started working out, but he won't be activate until Karl sees him practice a few times. Once he returns, I feel very comfortable with the front court against the Suns or the Spurs. The real key is the backcourt and while Karl is still learning how to use all of the pieces, he has done a very good job so far of picking the right SG for the right situation.