Coronata vs 4 Orkulus

 All four of them?  Sounds unlikely, but if you say so. Perhaps it took them one by one, or perhaps that small frigate fleet you speak of consisted of Adjudicators. Anyway i doubt it could handle 2 fully upgraded Orkuli at once by itself, let alone 4.

Not sure about Debris Vortex, but the Deflector Shield is IMHO a must. And near a sun i suppose its worth to dedicate one of the Starbases to fighter bays.

Well, if I wanted to destroy lots of Orkulii, I would bring a Coronata out of all the titans. Still I'm a bit surprised too, you did have upgraded phase missiles on them right? If not I guess I could see that happening.

Yes the all four. What happen exactly was that :

- 2 Orkulus start the fight against the Coronata while the 2 others finish some TEC units, at this time the four starbase was around 70% shields and i think the modules was 1 or 2 in weapons and 2 or 3 in hull, not enough money to get better. The Coronata lvl 7 has a small escort (maybe 30 frigates) and a dozen of bombers/fighters. When i saw this in my head it was "no problem". Btw my military tech tree was almost done.

- Ater two minutes the first Orkulus got his shields down so i launch the two others get that titan. After that i go check how my fleet handle the invasion and went back like 5 or 10 minutes later to see two Orkulus was destroyed, one almost and the last havent any shield left. Im pretty sure no fleet went in this fight because i play with zoom out and see nobody come to my sun. Anyway the Coronata was at 4K or 6K hull without shield and the same escort still was with him. I cannot believe it so i stay and see the two last get destroyed and the Titan go away with like 500 or 1000 hp.

So im a lot surprised because i was pretty sure the Eradica was a lot more trouble than the Coronata. What makes it so deadly for a lvl 7 ? Should i take Deflector Shield over hull or weapons ? Is Debris Vortex worth it ? Usually i dont put starbase on a sun because 4 Orky is OP but after that and against 9 IA berserks i have not much choice.

Coronata is by far the best titan at taking out Orkies, the Ragnarov is only better against other starbases because snipe can out range them. The Eradica is dangerous because it has powerful AoEs, but the Coronata does a lot of damage to one target, like a starbase. Also it will highly reduce the damage your Orkies do with Suppression Aura.

Since you say at first you only had two orkies attacking it I'm not as surprised. Starbases are not the best tool for defeating titans, they're more geared to defeating groups of frigates, not single tough targets. Their strong point is that they can absorb a lot of damage from titans, so they're best used as a distraction while other ships attack the Coronata. 

Deflector shield would have been better in this case since one until was inflicting most of the damage. However, Debris Vortex can be a lot better if you're destroying a fair number of enemy frigates (or your frigates are dying nearby). It is pretty hard to tell which to get, and quite honestly a lot of the time I just get strikecraft instead of either.

Level 7 in a star with AM regen against 4 unsupported starbases... Ya, the Coronata should win.

Essentially you were trying to take down a level 7 Titan with 12-24 Heavy cruisers (assuming you could get a front and side bank firing on each starbase).

In other words, while a starbase can engage 4 (5 with upgrades) targets per bank the damage is not 4x or 5x more when only a single target is present. Basically your doing 1/16 to 1/8 the starbase's total damage output in this scenario (again maybe a bit more if you can coax a front and side to fire).

Edit - This little tidbit is also why the Vasari SB is more effective early game against frigates compared to the other factions as it can MOVE ensuring all 4 sides are firing. Other faction starbases are maybe engaging 1/4 - 1/2 it's damage potential depending on how ships line up to FF on it.

And then you have people saying the Vorastra is OP 

Oh yes it is...   never say that...

I think the key here was that the Orkies were unsupported...some fighters or corvettes would have dealt with all the bomber squadrons, and a few key caps would have easily turned the tide of that battle....

funny thing is, 6 lvl 3 kols and a dunov could take that titan.

Yes but having 6 Kols is something you're not likely to see outside of an AI game, I believe?

I dont think so.

It's possible, especially with the antimatter regen from the star.

And I just said that because I wanted to include the kol for trolls.

What he said..

Don't battle titans next to the sun. Unity Mass is dangerous vs stuctures, caps and titans.

Advent titans have lower hull points than other titans but make up for it with fire power, shield mitigation and damage reduction abilities.