for clan war purpuse, which stat (att , str and def) should i try to level up most, first?? or should i be rounded and train all stats to same lvl?

All rounder imo but many people will say str is the most important.

str > att > def

 

 

 

def is least important, since think about training, overall, the sooner you're hitting better the sooner faster xp comes, it's faster all round to unbalance your stats.

 

 

 

Wether str or att is more important is debatable, i'm only really saying str because it's more popular, so i assume theres something to it.

It really depends on the size of the clan war and your level. If you're most likely to get piled, tank up and train Defence.

IMO strength is a popular misconception of 12 year olds (even though its my highest combat stat lol).

 

 

 

You could look at it from a IRL type of fight. Being able to take hits helps as you can go on for longer. Therefore good defense will allow you to stay longer at your training spot.

 

 

 

Then before you can hit hard you have to be able to make a good connection on the hits. Therefore having high attack will allow you to hit more numbers than 0's which helps.

 

 

 

Last of all strength helps you hit hard which isnt that necessary so you could just get to say 70 or 80 strength. Then you could get both 80 or 90 attack and defense. The 10 strength levels wont help you hit that much harder.

Strength isn't as important as people think it is. With high attack you can wield a strong weapon (i.e. barrows or whip) and with defense you can wear weaker armor with a strength bonus to make up for your lack of strength lvls (you could wear a fighter torso and not get hit so much if you have high defense).