Board Thread:Warhammer 40k General Discussion/@comment-4851119-20140323173912/@comment-18016240-20140413030516

You didn't include them either, so I didn't. Though if we're going by squad tactics I'm going in favor in Astartes again, due to the huge amount of experience they'd have compared to Spartans.

Astartes aren't exactly pushovers either, and being quite a bit bigger than Spartans their bone density is probably greater as well, in the event of an impact the astartes would be stunned, but the Spartan would be injured.