When a Pokemon is caught, it does not have any EVs.how would you check how many ev's a pokemon in a certain stat?
and also, lucario has pretty balanced offensive stats, so why do people use it as one or the other?
i never see a mixed lucario, they always run adamant or modest, or some speed boosting nature
And lucario needs the Power more than anything, so a Mixed set would not be so viable, as you would have to mix EVs for it to be successful.