I can only conclude the following:

1) those who think CS are highly paid are people in private sector who are simply underpaid. These are usually people who think they are doing well in private but are uneasy on learning that their CS counterparts are drawing almost the same or even more than them.

2) those who think CS are earning modest wages are people in private who are actually earning alot more.

3) above 2 points are people from private.

4) those who think people in private earns more are people in CS trying to justify why they should get out of CS. The successful ones usually never regret switching to private

5) those who think people in private aren't making much are people in CS with false sense of superiority.