Bipasha Basu in Corporate was obviously much much better than Aishwarya Rai in Dhoom 2 - both nominated for Filmfare Best Actress 2006/7.
But Ash was far superior in Umrao Jaan, and Guru. Bips has a worse dialogue delivery than Deepika Padukone. Both ladies had to hire Mona Ghosh on dubbing duties for their debuts for a reason.
Although Bips just about managed to squeeze out her lines effectively enough to be pitch perfect in a few films. I especially loved her in Bachna Ae Haseeno, and Mere Yaar Ki Shaadi Hai - albeit a special appearance. ❤️