But if you attack the reveried ship, it will break free and can run away. Ion bolt doesn't have this weakness. I can have my entire fleet focus fire the target ship and kill enemy caps with ease. Early game, reverie is definitely the stronger ability, but later in the game a team of two Akkans can shut down an enemy capital ship completely, while still allowing you to focus fire it with impunity.
It's a different ability completely, you can compare it all you want to Reverie, but the fact remains that if you attack the reveried capital ship, the ability goes away. There's nothing that can be done about ion bolt.
Well, that's true that if you focus fire, the ship would get free after a few seconds. But if you think about it, do you really need ion bolt to destroy a fleeing cap ? Personaly, the moment i see a fleet trying to escape, i shot reverie to a cap and then go after the fleet. The cap would get free after 10-15 seconds and would have to get to the edge of the gravity well where my fleet is waiting for him. Moreover, he would be completely isolated from his fleet.
If he succeds into preparing a phase jump, the moment i see the phase effect appear in front of his ship, four seconds before he jumps, i order my ships to phase jump to the planet he is trying to go. It means his cap and my fleet would arrive in the same time and this time, he would not escape from me (ok, if he is retreating to a heavily defended planet, maybe i am not going to run after him but you see what i mean).
You don't really need ion bolt to destroy a cap : if a cap have to retreat, it means you have won the battle, right ? (well, there are exceptions, you may be losing a battle and in the same time make heavy damage to a cap but if you are losing, going after the cap instead of taking care of the fleet is a risky bet). My point is : ion bolt is an ability to kill an already half-dead cap after you have won a battle, it is kinda cool but reverie can take out an ennemy cap for a lot of time and allows you to focus fire on his LRM, support ships or heavy cruiser. I have been playing a battle against three caps and there was at least one of them and sometimes two who where disabled during a big part of the battle.It means a lot of DPS out of the game.
Dunov with ion bolt is a cool combo but so it is with rail gun, flak, not ion bolt in particular. Reverie IS great : its main point is not preventing caps from fleeing but helps winning a battle.
By the way, i am an advent Fan and as a conclusive argument, nothing is better than just : the Unity rules everything!