It's reasonably fast, has enough protection and great guns. And it looked quite good in my eyes. I don't see any reason to fly a Avenger, I think the Vindicator is a so much better ship killer and three torpedoes are more than enough. In certain missions the Banshee is better but I'd choose the Vindicator every time over the Avenger. And as I said, I found the Vindicator the most likeable fighter in WC4. Of course the Dragon is better and she looks incredibly cool. But I don't like it when ships are perfect and have no flaws.