The laser star theory solves these paradoxes. Quasars are stars, the redshift is shown to be meaningless, there are no black holes and superluminal motion is a hoax. The sensitivity of absolute to distance errors is the primary reason for the wild claims made of many radio galaxies, quasar and other objects that are supposedly extragalactic. Apparent luminosity is a measurement, a quantitative observation made with a photodetector sensitive to a narrow range of colors in the spectrum. The brightness of a star is measured from our vantage point within the milky way galaxy.
Apparent magnitude is raw observational data.
The absolute luminosity is a theoretically derived quantity based on the distance and the apparent magnitude. Absolute luminosity is the standard way of expressing the total amount of energy radiated by an object. Distance overestimation can lead to enourmous errors in a quasar's total energy output which radically changes the physics required to explain the source of the light. Theories may come and go like fashion trends, and the absolute luminosity of an astronomical object may go through radical changes as as each new theory gains popularity. For example recent Cepheid observations of nearby galaxies has radically changed their absolute luminosity because the distance estimate has changed while the apparent luminosity remains the same.