An Awesome depiction...
Dude, you know your 40k. Rock on. I don't think this was biased, it was actually realistic as far as the 40k universe goes. Bolters vs. Guardians = dead guardians. Plus, power armoured space marines are damned tough. Warlocks rock. I would've liked to have seen maybe some psychic powers in there, and a wraithlord. Definitely needed a wraithlord. Your drop pods could've use a bit more effort, they aren't just crates, you know. Overall, this was really awesome, and I hope you make another. Orks would be nice to see, maybe versus the IG, or even the Sisters. Heavy flamers are good... good job, you kept it brief, entertaining, and left me wanting more. That's what every flash ought to do. Perfect Job!