A great deal of discussion in the archives of AF447 exists on this very thing. Although the 777 and A330 are both heavy twins, trying to compare the two (computerized) approaches to UAS is problematic, due to fundamental design discrepancies?
Has a 777 ever reacted (automatically) to UAS by altering (degrading) flight control to a separate flight control system? Climbed rapidly absent pilot input? Trimmed automatically into the STALL?