In the cinamatic cutscenes, outside of the Almighty and the Leviathan, Ghaul's command ship was the biggest fleet ship to arrive. And it wasn't that big compared to Oryx's Dreadnaught. Amanda when she's taking us on board Ghaul's ship, there are Cabal fleets being shot down. So my bet is that once Guardians got their light back, that they would clean up the remaining ships. Don't forget why the Red Legion came here in the first place. We wiped out the last of their commanders during the Taken War after Oryx took their Primus. Not to mention the Dust Giants, Sand Eaters and other Cabal sanctions had a 1/3 up to half of their army taken. This was their last attempt at sending out the big guns and our Guardian stops that.

<Actually, any Cabal Carrier is bigger than a Cabal Capital Ship. Still, the Lunar Pyramid doubles in size.>

True, I forgot about the carriers. But didn't we take out all the known carriers? I only remember Zhan's ship.

It’s not their last attempt. The Red Legion was simply the Legion belonging to Dominus Ghaul as he attempted to finally claim the title of Emperor. It is not the last of the Cabal Empire. As well as that, it was actually closer to half of the Cabal force in the solar system that was Taken or killed by the time we got to Phobos. After Ghaul’s death the remains of the Red Legion remained leaderless, but several attempts to claim that spot have been made. We’ve put a swift end to any and all aspiring Cabal. The Cabal weren’t just occupying Earth. They occupied Mercury, Mars, Nessus and launched singular operations on other planets... they essentially attempted to weed out any threat to them left in the solar system while the Guardians regrouped. The Red Legion was not just what we saw during the campaign. As Zavala said, we are not an army. We specialise in taking out leadership and leaving the enemy in disarray, which is what raids and strikes are.

It kind of was their last attempt. Remember the Bond Brothers strike? They were planning on blowing up the Solar System by destroying the Dreadnaught. And they sent out a distress signal all the way back to the Cabal homeland. Kind of like how Crota in his dying breath called out to his dad. The Cabal invasion just seems really out of place because you have the Hive and Vex that are all so much stronger than them. On top of the Guardians that are avidly snuffing them out across the system. And with the hierarchy system that the Cabal have, I can't really imagine too many commanders are left, and none of them can replace Ghaul since he fought his way to the top. I also find it weird that the Cabal go to a semi-useless planetoid like Nessus instead of going to Venus where the VoG is. Or how twice now the only way they can really stay relevant in their losing fight is to try to undo their problems with Vex tech. I understand that's more of a gameplay thing from Bungie, but I don't know how the Cabal have slipped pass Big Brother Osiris and his all seeing gaze, on two separate occasions.