I think Pachter's latest, regarding PS4 crossing Wii U by April/May is a quite reasonable prediction, based on what we've seen so far, and that is what he's paid to do. His "I don't know why Iwata is still employed" comment at the beginning of December, however, is not.
But he did make a few interesting predictions at the time, though - like the next generation of consoles being the last, (only model updates instead of new consoles) and there being renewed interest in the PC in the future.
What we see from him around the web is just the tip of the iceberg. There's a lot more serious work that goes on in that kind of job. I suspect most of the apparent subjective bias is just there for show.







