The Mavs are 3-1 against the Rockets this year, with an average margin of over 12 points in those wins. The one loss? Second game of the season that started 0-4 with an average margin of defeat at 13 points. Doesn't matter if Yao was playing, because the Mavs were playing horrible to start the season. Last year the Mavs swept the Rockets 4-0, with an average margin of over 16 points. What part of 7-1 over the last two years by 14 points per game would not be considered "owned".
If your owner wants to sign an old Kevin Willis then more power to him. Just don't give silly pretenses that it's all about Yao. Last year in 05-06 in the three games he averaged 23/10, which were his season averages. In 04-05 he played in 4 games and averaged 15/9. Even this year when he scored 36 in the second game of the season, he only had 6 rebounds, so it's not like he dominated both ends of the floor.