No worries. You can use my thread. I think my topic was beaten like a dead horse for a while and I'll never get any form of agreement that while looking at the Sith Raid, JTR plays an integral part right now to get over the Heroic bump of part one and if you don't have her (collectively as a guild in numbers) then that's hurdle one and you're not likely able to run Heroic and that part 1 is the most painful and causing the most complaints . I would agree that after hurdle one you have to have other strong teams, but there is at least some options there. So while we all flame the Sith raid let us not overlook her importance and in my opinion the lack of her ownership across players. Yes people have her, but I don't think as many as one might think and I think the reason why is the mechanics to get her which for some reason feel different for me than say Death trooper, but could be because of the overhanging fact it has to be done twice.
That all being said this is the internet so no one has ever agreed with anyone ever in the history of the internet and everyone loves to argue every little point so I will gladly hand this over to you and your topic now. To be honest though I don't mind the nitpicking. sometimes it does in fact shed light on another aspect I haven't considered and the only way to get there is to dig into the minutia. I say both of these last statements without sarcasm despite how I'm sure it reads.
Anyways on your point I couldn't really speak to how well she did in the arena at the start. I was only in the top 100-200 and didn't have an eye on the top 20 apart from trying to get team ideas. Now that I'm bulking up on speed secondaries I'm climbing the ranks with the same team I've had all along and I will say she does have quite a few spots at the top in mine however I'm not having as hard a time beating her once I get over the initial fright of seeing the opposing GP of the team is often 8-10k GP more than my own. That's due to more focus on speed than damage though as i haven't found great combinations of speed and primaries.