The Pacific as a whole is nowhere near as good as Band Of Brothers was but it did have its moments where it was on the same level. Episodes 5, 6, 7, and 9 are the only episodes imo that touch Band of Brothers with episode 7 of The Pacific being the best episode in the series.
The main problem with the Pacific imo is that they tried to tell too many stories in it. The books With the Old Breed, Helmet for My Pillow, and the story of John Basilone are all throwin into the miniseries and made it kind of confusing and hard to follow at times and made it hard to tell each story in as great of depth as they could have. IMO they should have completely cut out the Leckie and Basilone stuff out of the miniseries and focused on Eugene Sledge and his book 'With the old Breed'. If you notice the best episodes are the ones dealing with Sledge on Peleliu and Okinawa. Its also a shame that Okinawa only got 1 fucking episode when that was bloodiest battle of the whole Pacific war and was a HUGE part of Sledge's book. They should have stayed more faithful to the source material too alot of the shit in the Pacific did not really happen or atleast were not in the book or they changed shit around...that kind of irritated me.