I dont think Abhishek shot to fame because of his father and his fiancee. He was famous before we was engaged or got into the relationship. And his father never helped him launch into movies, he came up himself. As for Abhishek hosting the show I dont think anyone can replace and do as well as Big B, but Abishek can atleast talk well unlike Shahrukh. But gud luck to Sharukh anywazzz.