well think of it this way. its going to take alot of power to move a huge car like the bonneville. 240 hp is respectable (205 hp in the original 1992 ssei'* was also respectable) but its not going to be instant earth-shattering, light speed fast. there are also many different variables that decide how a car "feels". the steering, suspension, and tone of the engine can play tricks on the mind. in general, the bonneville was a sport luxury car and is tuned to have a sharp, but comfortable ride. my ex'* bonneville ssei was faster than my alero, yet my alero always "felt" faster because the alero has more road feeling since it has a simpler, less refined suspension.
'00 Oldsmobile Alero GL
'92 Buick LeSabre Custom
'95 Pontiac Bonneville SSEi (sold)