So if an power say's:
1[w] I only roll 1[w] damage and then add feat damage, enhancements and the likes, but no ability modifier.
And lets say an power say's 1[w] + con with an melee weapon, i use con insteadt of str? and then still add all the other bonusses right?
Combat superiority say's to add youre wisdom modifier as an bonus to youre OA attack roll, does this mean Wisdom and Strength, or only Wisdom?
It means you add your Wis Mod in addition to whatever you would normally add. Since OA's are basic attacks, that generally means it's 1[w]+Str (+Wis if you have Combat Superiority, and +feats, ehancements, etc.)