To Death Star or Not to Death Star...

Recently, I played in a small 40k Tournament at 1500 pts. I was playing a "shooty" Blood Angels army: Dual Rifleman dreadnoughts, Quad-Gun, devastator squad with Missile Launchers, assault bikes, couple of rhinos full of Tact marines.
 My first round opponent was playing Chaos Marines. I was excited to get a look at their new stuff, Heldrakes, Helbrutes, etc. What I got was decidedly *NOT* new stuff. Chaos Defiler, Land Raider full of Khorne Berserkers, a squad of Plague Marines. That was all fine. Then my opponent told me about his deep-striking unit held in reserves. His HQ, Abaddon the Destroyer, and 5 Chaos Terminators. Ugg. I flat out told him that "I don't have anything capable of engaging Abaddon" and that was true. No Mephiston, no huge unit of TH/SS Termies with Chaplain and Sanguinary Priest. Nada.
As luck would have it, his DEATHSTAR unit didn't come in until Turn 3. I had hoped that the delay would be enough. It really wasn't. They HIT on their DeepStrike. I shot at them with both Dreadnoughts, the missile launchers and the quad-gun. I got ONE of them killed.
He charged one of my shooty dreads and tore it apart before it got to attack back. I got another full round of shooting into the group, and managed to kill another termie. He then charged my devastators and wiped them out without taking any return casualties.
At the end of turn 5, I had a librarian in Termie armor manning the quad-gun, and a shooty dreadnought left behind my Aegis Defense line. Had the battle continued, he would have killed ONE or the OTHER in turn 6.
The tourney match, due to the specific objectives of the round, ended up being very close. We went to the 4th tie-breaker and I lost due to my opponent earning FIRST BLOOD on one of my RHINOs. On the board, however, it was a different story. Nothing I had left on the board was in position to successfully engage his DEATHSTAR.
So, that got me thinking... Sure, DeathStars can be risky. You can get hit with DEMOLISHER CANNONs or Imperial Guard salvos. Marbo can hit you with a DEMO charge. You can mishap on your Deep Strike roll (in this case), or your Landraider full of Termies gets popped on the far side of the board by Drop-Podding Multi-Melta suicide squad.
In the future, do I build around successfully engaging such a unit? Do I remain mobile and leave those Termies in the dust? Blood Angels don't have a "SUPER HQ" that wears Termie Armor. Mephiston and The Sanguinor are not Independent Characters, so they're at higher risk than someone like Abaddon. Mephiston is probably the best bet to engage Abaddon. Challenging him and killing him with a FORCE weapon is a pretty high chance of success. Should I just risk the odds of encountering such a monster and play MY army?
I'll be trying my own "DEATHSTAR" unit out soon. It will be vulnerable to PIE PLATES and a few other specialized ELITE units (Incubi) but hopefully, it provides me with the PUNCH that my opponent hit me with.


-RoryKost