Hey, thanks for the detailed feedback!
Quell is indeed a very strong ability, but it has it's weaknesses, which I would like to clarify.
Quell cannot target ships. It affects only structures. Since Quell has limited radius, your best strategy would be to build defences with space inbetween structures. A starbase is very tough to take down, but your real defensive DPS comes from turrets, so space those out, and you will already see a significant difference.
Revelation does have an ability to stun ships, but it's a separate ability, and ships to get "woken up", once their shields are down. This ability cannot target titans.
Your challenge comes from a high level Revelation (at least level 5 for the long stun). The thing with Revelation is that it's ultimate is far weaker, when compared to ultimates of other capital ships. But instead of getting a power spike on level 6, Revelation has a more gradual growth in strength, with it's regular abilities.
To sum it up, Revelation is indeed a challenging capital ship to face, however there are strategies to fight those. At the same time, our monthly patches to address game balance, so stay tuned for possible changes 