How important is this notation when looking at doors? I am comparing HD's
"Feather River" doors and a "Therma-Tru" door, both fiberglass. I like the
looks of the latter door much better, but it says nothing about "Energy
Star" stuff on the literature, while the former says it is compliant in all
50 states.

Is this notation just a marketing thing, or should I take it into account
for comparison? The doors seem similarly constructed, with foam cores and
triple-pane glass.