Check out this figure from the most recent LIGO paper. This is the reconstructed gravitational wave signal determined by the analysis. Focus on the zoom of the end of the signal. This is the merger.
The merger part of the GW151226 looks a lot like the merger of GW150914.
The differences tell us about the sources of the gravitational waves in each case. One obvious difference is the length of the signal. LIGO is only sensitive to a range of frequencies about 30Hz to about 1000 Hz. GW150914 is short because the merger occurred at a lower frequency (about 150 Hz). The signal starts at low frequency and "chirps", increasing in frequency over time until merging. Most of the inspiral part of GW150914 was too low frequency for LIGO to detect.
GW151226 merged with a frequency closer to 500 Hz. We can see many cycles of inspiral in this signal. The merger frequency is related to the total mass of the system. GW151226 was produced by a lower mass system (about 20 solar masses total) than GW150914 (about 60 solar masses total).
The next difference is the signal amplitude. Owing to the system's larger mass, GW150914 was higher amplitude. Just looking at the band-pass filtered data in the question, you can say "there's something there". Of course, you can't know its a gravitational wave without the detailed analysis.
GW151226 is much lower amplitude, so you can't just see it in the data. The data just looks like a bunch of noise. It takes a sophisticated analysis to pull GW151226 out from under the noise.
You may also want to check out LIGO's science summary for this paper.