Lets head to the rankings, next.
Short songs in excellent range (>9.00)
Aces High (Powerslave, Golden Era, 9.54)
The Trooper (Piece of Mind, Golden Era, 9.50)
Children of the Damned (The Number of the Beast, Golden Era, 9.42)
Murders in the Rue Morgue (Killers, Origin Era, 9.28)
Still Life (Piece of Mind, Golden Era, 9.22)
The Number of the Beast (The Number of the Beast, Golden Era, 9.07)
Short songs in great range (8.01-9.00)
Transylvania (Iron Maiden, Origin Era, 9.00)
Genghis Khan (Killers, Origin Era, 8.91)
Rainmaker (Dance of Death, Reunion Era, 8.85)
Run Silent, Run Deep (No Prayer For the Dying, Decline Era, 8.76)
The Ides of March (Killers, Origin Era, 8.73)
The Wicker Man (Brave New World, Reunion Era, 8.58)
Man on the Edge (The X Factor, Rejuvenation Era, 8.43)
The Evil That Men Do (Seventh Son of a Seventh Son, Experimentation Era, 8.40)
Judas Be My Guide (Fear of the Dark, Decline Era, 8.29)
Prowler (Iron Maiden, Origin Era, 8.22)
Flight of Icarus (Piece of Mind, Golden Era, 8.21)
Wrathchild (Killers, Origin Era, 8.21)
Futureal (Virtual XI, Rejuvenation Era, 8.16)
Lightning Strikes Twice (Virtual XI, Rejuvenation Era, 8.15)
No Prayer For the Dying (No Prayer For the Dying, Decline Era, 8.11)
The Clairvoyant (Seventh Son of a Seventh Son, Experimentation Era, 8.09)
Run To the Hills (The Number of the Beast, Golden Era, 8.02)
Different World (A Matter of Life and Death, Reunion Era, 8.01)
Short songs in good range (7.01-8.00)
Losfer Words (Big 'Orra) (Powerslave, Golden Era, 7.95)
Deja Vu (Somewhere in Time, Experimentation Era, 7.93)
Only the Good Die Young (Seventh Son of a Seventh Son, Experimentation Era, 7.93)
The Alchemist (The Final Frontier, Reunion Era, 7.82)
Flash of the Blade (Powerslave, Golden Era, 7.80)
Charlotte the Harlot (Iron Maiden, Origin Era, 7.74)
Running Free (Iron Maiden, Origin Era, 7.73)
Childhood's End (Fear of the Dark, Decline Era, 7.68)
Total Eclipse (The Number of the Beast, Golden Era, 7.66)
Drifter (Killers, Origin Era, 7.34)
The Assassin (No Prayer For the Dying, Decline Era, 7.32)
The Mercenary (Brave New World, Reunion Era, 7.26)
The Fallen Angel (Brave New World, Reunion Era, 7.20)
Can I Play With Madness (Seventh Son of a Seventh Son, Experimentation Era, 7.16)
Invaders (The Number of the Beast, Golden Era, 7.12)
Another Life (Killers, Origin Era, 7.06)
Innocent Exile (Killers, Origin Era, 7.02)
Sun and Steel (Piece of Mind, Golden Era, 7.02)
Short songs in okay range (6.01-7.00)
Wildest Dreams (Dance of Death, Reunion Era, 6.98)
The Fugitive (Fear of the Dark, Decline Era, 6.76)
Public Enema Number One (No Prayer For the Dying, Decline Era, 6.73)
Iron Maiden (Iron Maiden, Origin Era, 6.59)
Gangland (The Number of the Beast, Golden Era, 6.42)
Fates Warning (No Prayer For the Dying, Decline Era, 6.34)
Holy Smoke (No Prayer For the Dying, Decline Era, 6.22)
Quest For Fire (Piece of Mind, Golden Era, 6.04)
Be Quick or Be Dead (Fear of the Dark, Decline Era, 6.03)
Short songs in bad range (6.00 and below)
Tailgunner (No Prayer For the Dying, Decline Era, 5.85)
Bring Your Daughter... ...To the Slaughter (No Prayer For the Dying, Decline Era, 5.51)
Chains of Misery (Fear of the Dark, Decline Era, 5.33)
From Here to Eternity (Fear of the Dark, Decline Era, 5.09)
Hooks in You (No Prayer For the Dying, Decline Era, 4.92)
The Apparition (Fear of the Dark, Decline Era, 4.27)
Literally for every legendary song, there is a stinker. For every great song, there is an okay song or one near the end of the good range (which, I think Innocent Exile or The Fallen Angel being in the "good" range argues we need to change the ranges, but this kinda how I have always considered it). And for every high-ranked album like Killers, there is a No Prayer. Short songs are hit and miss.