Everybody knows, agrees and believes that Cloud Strife is a hero. Yes, i admit that, judging from my experience in reliving his journey in the game and from reading everybody's comments and replies.
However isn't Zack a hero too?
If i were to put it honestly, he was an UNSUNG hero.
He deserves it as much as Cloud, but not many people really let him to. I wonder why...
Remember at one point in the game, after the war in FFCrisis Core, Zack met Kunsel at SOLDIER floor.
Zack wanted badly for the people to notice his contributions however zannen des, the hero (Sephiroth) was choosen by the media. For me it was unfair as Zack's the one who did the main job.
Not only that. He saved Cloud (the people's hero... duh~), Genesis, did all the unwanted things people pushed at him but still, why can't he be a hero?

Zack: Hey, would you say I became a hero?

My answer is a BIG FAT YESSSSSSS!!!!!!!!!!!!!!