User blog comment:BattleGames1/Deadliest Warrior Battle Interlude - Space Marines vs Forerunner Warrior-Servants Re-Rematch/@comment-4552610-20130321074827

Undead RVD's "Big Dumb Guns vs Cyber Turned Warfare" Edges:
Melee: The Power Fist is a powerful killing machine but it is slow as hell. Bring in a weapon that can slice off that arm in seconds and you have a Power-less Fist.
 * EDGE: Forerunners

Short Range: The Boltshot wins. It has the larger mag-size, rate of fire and accuracy. The Bolt Pistol is powerful but slower and not very accurate.
 * EDGE: Forerunners

Mid Range: The Light Rifle is much more accurate and can insta-kill with its disintegration powers. Also, how are explosive roun
 * EDGE: Forerunners

Long Range: The Binary Rifle has the far superior killing potential.
 * EDGE: Forerunners

Special: The Incineration Cannon is much more reliable and can be manned with only one man. Easy win for the Incineration Cannon.
 * EDGE: Forerunners

Explosive: The Pulse Grenade does more damage and can damage powered armor.
 * EDGE: Forerunners

Edges: The Forerunners easily win in Combat Experience, as they are all very old and likely fought more during their time. They are also older than most of the warriors and had the most amount of time to perfect their military, granting them the edge in Training. They also get Marksmanship as all their weapons need it. All the others I have no clue so I won't choose.

Overall: I have all the information to pick a winner: The Forerunner Warrior-Servant. They have the better weapons and easily win in the area of Training, Experience and Marksmanship. They have it in the bag.