I can't speak for Tarkin, but Admiral Ackbar is very useful against debuff heavy opponents, for example Darth Vader
And his debuff removal skill is almost required on the Gamorean stage of the Raid to remove death-mark (which otherwise pretty much guarntees a character's death.)
Ackbar is much much better than Tarkin, Tarkin is slow, low hp, and low potency. Ackbars leader has better syngergy with better characters. And Tarkin only makes Vader slightly better, every other empire character is pretty meh, at best.
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Both of these toons need to be a leader to be good so go with whoever you have more of. Empire or rebels
I'd really like a strong Empire team but that grind for Vader
I know exactly why...
Glad you like him.
And from what I hear, useful in the raid. That been the case for you?
And his debuff removal skill is almost required on the Gamorean stage of the Raid to remove death-mark (which otherwise pretty much guarntees a character's death.)
Tactical genius is nice too. Allows another ally to make better use of the turn.