Ok  after  many  battles  he  does  use  his  other  attacks  but  rarely.

i  always  thought  they  went  right  to  left  on  their  moves  in  auto.

it's a bit more complicated than simply right to left. each champion has their own specific instructions programmed regarding skill priorities. often they do simply go starting from the right, but there are plenty of champions who don't follow that pattern. there are also many champions who change which skill they prioritize depending on the circumstances of the battle they're in. rotos, for example, will prioritize his a3 if there's a target available who is low enough on hp that he can likely kill them, thus triggering his extra turn. otherwise, he will use his a2. while i've never used ruffstone, i suspect he works similarly. my guess is that when there are several enemies alive, he will use his a1 since it's an aoe attack and will start using his other abilities when only one or two opponents are left alive.

That's Ruff.....

i

On a serious note, Carpe has it on lock. :)

What?^^^

It likely has to do with Ruffstone's built in AI. If you want him to do differently, you can just adjust it. 

Hes  rated  good  in  game,  but  hades  Or  whatevef  rates  him  as  a  1  or  1.5.  

thats  insane  difference,  hes  way  better  then  hades  rates  him  just  the  fact  alone  his  attack  1  is  attack  entire  team  and  with  speed  and  high  attack  that  could  be  good.

Unfortunately Ruffstone is pretty average. Doesn't bring too much to the table. 

How can a champ that attacks the whole team every time be avg?

how can a champ that hits a single target for a lot of damage be average? how can a champion that heals your entire team be average? how can a champion that revives dead champions be average?

the answer to all of these along with your question is that that's just another ability. some champions with it will be great, some will be just okay, some will be trash. aoe attacks on a1 isn't even a particularly rare ability like poison sensitivity or increase skill cooldown. it can be helpful, sure, but it's not generally a gamechanger.

Much like Carpe said, that ability isn't that rare. If I remember correctly Ruffstone's base attack isn't bad, but the multiplier on the A1 isn't very good.