I just saw it today and I thought it was pretty good, but I'm not sure yet if it's on par with the first one.
Where as the first PA gets to the point faster and has a longer period of lesser tension up until the end, the second PA takes nearly 3/4 of the movie to actually get started and then has a shorter period of real intensity.

So it all comes down to whether you want your eggs all in one basket or spread around.