Why is Dooku so OP??

Dooku isn't OP. There's an entire stickied thread about this. You just had bad RNG, and Mace is terrible. Not sure why you'd run him, unless you have no other toons.

Seriously, read the megathread.
It's there for a reason.

"kickn4fun;309846" wrote:
Here is the reason everyone complains about Dooku. He gets bonus attacks on his counter. This should be removed. I just went to the last battle in GW, and threw 15 guys at a single Dooku, and lost them all.

No. It shouldn't be removed. He hits like a rag doll. Either save him for last or don't run a Jedi team. Read the megathread.

"Jaqen_Hghar;309845" wrote:
All I saw was "Mace" and stopped reading. That's your first and only mistake.

I don't have Mace but I borrowed him for some challenges and he seems much more useful since the update. Chars that can use expose seem to be very useful in general because they allow you to knock off protection very quickly. From what I can tell Mace didn't seem to take as much of a hit in the damage department as some others did either. Someone that has run him for awhile could provably speak more accurately on the subject though.

Dooku= Alot of crying and hate

Dooku is only good against Jedi... So you had what left again?

Dooku is so easy counter. Especially, after update. ST Han now attacks Dooku and pray for his double-attack and TM bonus with additional double-attack. 4 attack from Dooku, 7-8k damage to Han, and 2 turns for each of your character.

"jetsaredim;29052" wrote:
Am I the only person who's cursed to have this happen to them...

In the arena, I've whittled down my opponent's toons down to just my full health, lv73, 7-star, max gear Mace vs opponent's Dooku. This is roughly how it went...

Mace hits Dooku with his Smite attack and clears out his protection and a part of his health.

Dooku counter-attacks and stuns Mace.

Dooku gets a bonus attack from the counter attack.

Mace is stunned so he gets no regular attack.

Dooku attacks his regular attack on the next turn.

Dooku gets a bonus attack from his regular attack and stuns Mace again.

Mace is again stunned so he gets no regular attack.

Dooku attacks his regular attack on the next turn.

Dooku gets a bonus attack from his regular attack and kills Mace.

So, that's 1 attack for Mace and 6 (!) for Dooku.

EA, can you guys please do something about the high chance of stun on Dooku?

Sorry, but you are still new and you don't know how the game works. First and biggest mistake : You said Dooku counter attacks and stuns Mace, and that Mace is stunned so he gets no regular attack. WRONG. Counter attack stun (and every other detrimental attack) DOESNT last and get removed instantly. This is a bug that exists since the start of the game. I reporter it multiple times but it still haven't got fixed. Feel free to attack Dooku with a jedi as many times as you like, and watch stun and ability block getting removed instantly.