NFL playoff record 3 seed

There’s a theory floating around NFL fandom and the media that says homefield advantage in the playoffs no longer matters—or at the very least is no more than an incidental edge. We can give our main thanks to Eli Manning for this theory, and to a lesser extent to Aaron Rodgers. Over the last five years, Eli’s Giants and Aaron’s Pack have won a combined three Super Bowls coming out of the first round, with a road record of 8-0. Conversely, those same quarterbacks have each seen their team lose in the second round as #1 seeds (2008 Giants, 2011 Packers). So is the theory true? Is getting to the dance all that matters, or is there still something to be said for favorable seeding?