well for a fighter you want to go for the most strength and dexterity possible
you generally want to aim for 120 dexterity , and the rest into strength.
it is said that after 120-125 dexterity,the effect of dex isnt as great, or isnt as noticeable (from what ive been told)
but i go 120 dex and rest to strenght and i do fine
if you have strength gear use stats in dexterity, if youve got dexterity gear, out stat points into strength.