If a language has ergative case marking, it will with far more than chance frequency also have divergent ordering of genitive and adjective attributes (with genitives preceding and with adjectives following their head nouns); if it has divergent genitive and adjective ordering, it will [supposedly with somewhat lower frequency] also have ergative case marking.
Standardized
IF there is ergative case marking, THEN with far more than chance frequency there is divergent ordering of genitive and adjective attributes, with genitives preceding and with adjectives following their head nouns; IF there is divergent genitive and adjective ordering, THEN supposedly with somewhat lower frequency, there is ergative case marking.