In the Presidio, I got Lucky Jack Russell and I was like "sweet'. As i was leveling up, I started to realize "He isnt good". He deals a hundred damage even when he was promoted twice and he is now level sixty and every time he is in battle, it is bad luck. Is it a bug or is it supposed to be meant like that?
Justin Chamberlain Lvl 65 Musketeer Knight of the Order of Fetch
Personally, I have no idea. LJR is....well......a bit pitiful. However, he is a cool companion, and lots of my friends have always wanted a dog companion, but never got one. Just having him is really fun!
I've had Lucky Jack Russell for quite some time on my Witchdoctor and I have to say that I love him. He hits fairly well for a companion of his level and he's the perfect tank for Alura.
I also think that the way you use him in battle counts for a lot too. Are you maximizing the epics he gets to use? Have you given him useful talents? In addition, do the monsters you face have high armor while Lucky Jack Russell has lower damage?
All of these play a part in his damage. Overall, I still find him useful. I guess how useful he is is up to you though.