It is inevitable that The Pacific will be judged not on its own merits, but against the reference standard set by Band of Brothers. Inevitable because the basic formula is the same: personal experiences of war set against a backdrop of war.
It was similarly inevitable that The Pacific would have to plough a subtly different furrow on this common field, there being no point in following exactly where Band of Brothers had already been. Unfortunately that deviation takes The Pacific out of theatre for too long; more seriously, at times the storyline courts both irrelevancy and implausibility. In attempting to add depth and humanity to the characters, the Director comes dangerously close to distracting, even misdirecting the viewer.
Back in the world and having just watched Pacific I would have given it five stars. Sadly the death of Major Dick Winters prompted me to watch Band of Brothers again. Back to back the differences are subtle but telling: Band of Brothers is storytelling and movie making perfection, The Pacific is just slightly less so but a stunning technical achievement and fabulous, thought-provoking viewing nonetheless.