Interestingly sulfur dioxide has a net cooling effect on the atmosphere: https://earthscience.stackexchange.com/questions/9805/would-...

However this effect does not outweigh the health consequences of emitting this pollution, or the contribution it makes to acid rain and other serious problems.

CO2 isn't a particulate but I would say it is slightly misleading for a different reason - car particulate requirements are pretty damn strict to the point diesels are the dominant source despite being a road minority. The numbers for cruise ships would ironically look way better in the 70s when us automakers were still trying to claim it was unreasonable to require the exhaust not smell of unburnt gasoline. And that was before catalytic converters were essentially mandatory.

A more apples to apples comparison would be in trucks or buses - granted all should be improving as well.