User blog comment:BattleGames1/Deadliest Warrior Battle Interlude - Space Marines vs Forerunner Warrior-Servants Re-Rematch/@comment-1683193-20130321055244/@comment-211.26.90.202-20130602050624

If we go by the rules, the Forerunner still wins due to better weaponary, armory, tatics and skill.

If we go by the Forerunner trilogy fluff however, than the Space Marines would get hilariously stomped. The Space Marines would be pretty much fighting guys who's assault rifles has been calced on Spacebattles.com to overpentrate Terminator armor.

Furthermore in one of the books (Either Primordium or Cryptum can't remember which) what count as Forerunner Heavy weapons team has been shown to rip open a planet's crust, flip it over and stemp it on the ground like a giant stamp and its affeects could be seen from orbit!

It was already shown in countless vs forums that the Forerunners would step on WH40K without noticing, and that ground combat is shown as meaningless to the Forerunners. This is just overkill!