Have you corrected for tech advances - it would be better picking a contemporary of A330.
The correct comparison is A330 vs. B777. All the numbers are from Wikipedia, I have not checked them myself but expect them to be reasonably correct.
A330:
Produced 1993–present
Number built 796 as of 30 June 2011
As of June 2011, the Airbus A330 had been involved in thirteen major incidents, including six confirmed hull-loss accidents and two hijackings, for a total of 338 fatalities.
B777:
Produced 1993–present
Number built 923 as of March 2011
As of April 2011, the 777 has been in seven incidents, including one hull-loss accident, and two hijackings, with no fatalities among the passengers or crew.
Any questions still remaining?