First the good ending hits you with amazing music (from Masanao Akahori), and on top you get the most memorable speech ever:
Many enemies has fallen by my hand. Hopefully I will never again raise a hand against another human being.
The flames that enveloped the city diminish as the morning sun rises over the horizon...
And now look at the sad ending.
Many of our soldiers perished in this war for no reason. I should had tried harder to make a difference
I cannot live with myself knowing that I could had won
Man that is some harsh words. I still remember these endings yet today as something unusual.
16-bit ending >>> todays endings.