I wanted to field test my bio-titan so I pitted my Ultramarines against it. I used all the current rules which just makes the titan insanely OP'd. It's only 1,250 points but with the updates it gets to re-roll 1s in CC for its scything talons, has a 3++ Warp Field, and those that survive its base 8 attacks or stomp take spore cloud wounds at I1. Then, those that don't flee take Toxic Miasma Toughness tests to avoid another wound before they must consolidate away from it. Harsh! Oh, and I threw a librarian in there for the force weapon but under the new rules it just causes ID, to which gargantuan creatures are immune.
I knew going in that it was going to be crazy and in no way fair for the marines so I just threw in all kinds of units regardless of points. When I did a tally after setup it came to 2,850 points of marines. They also had a bastion with LC in their corner, not that in any way equalizes things. Here's the list:
HQ
Captain Sicarius
Epistolary
Chaplain
TROOPS
10 Tactical Marines PG ML PF C-PG in Rhino
10 Tactical Marines PG ML PF C-PG in Rhino
5 Sniper Scouts ML CC
ELITES
5 Terminators AC
5 Assault Terminators 2xTH/SS
Venerable Dreadnought AC EA
Dreadnought LC ML EA
FAST ATTACK
Land Speeder MM HF
Land Speeder MM HF
HEAVY SUPPORT
10 Devastators 4xLC
Land Raider EA
Predator AC LCS
You can see how things went down at the following link. I've captioned the pictures to help you figure out what's going on. I gave the marines turn 1 so they'd have more shooting.
https://skydrive.live.com/redir.aspx?cid=e2ec72aed1523ae1&resid=E2EC72AED1523AE1!383&parid=E2EC72AED1523AE1!259&authkey=!AO4mH2APgyWYbMs