Yes, Lillard was very consistent from December to January. His FG% actually went up by 2%, but his FT% and FTA both went down. So, his scoring average declined from 18.2 to 17.7. His assists declined slightly from 6.9 to 6.8 APG.
No way does Davis beat him out. Davis had a very unimpressive January. He saw both his scoring and rebound averages decline significantly. In fact, all his per game stats were down. A lot of that is due to the fact that he saw a big reduction in his playing time, but if he can't get PT on that awful NOH team, he doesn't deserve to be considered for Rookie of the Month honors. No way does 11.1 PPG and 6.6 RPG beat 17.7 PPG and 6.8 APG.
It's also interesting that NOH wins at a much higher percentage when Davis plays less. For the season, when Davis plays more than 27 minutes, NOH is 3-17 (.150). When he plays less than 27 minutes (or not at all), they are 12-14 (.462). I'm not saying Davis makes the Hornets worse, but that's a HUGE disparity in won:loss percentage when he plays big minutes. There are also other factors to consider, but he's not exactly doing a lot to help his team win.
It's also interesting that, according to 82games.com, that Davis out produces his individual opponent (+4.5), but his team does worse when he's in the game (-4.5). Lillard has less of an edge on his individual opponent (+2.3), but has a HUGE positive impact on his team's performance (+10.8 - tied for 10th in the league among players who have started at least 20 games).
The East will be more interesting this month. With Washington winning recently, Bradley Beal is the latest hot commodity. His game winning shot against OKC was all over Sports Center. His January averages are very similar to Dion Waiters, but the Wiz have been winning more lately and the Cavs, not so much.
I also think Andre Drummond will also get serious consideration. His 8.8 PPG scoring average for January won't turn any heads, but 9.2 RPG, 2.1 BPG and 63.8 FG% are all impressive - especially when he only plays 22 MPG.
I think it will come down to Beal and Drummond. It will be interesting to see how many voters are more impressed with Beal's 15.1 PPG scoring average, and his team's recent success, than Drummond's over all production and impact. And, while Washington has been winning more since John Wall returned, Detroit actually has a better winning percentage in January (.462) than Washington (.438).
BNM
