If we plot any of these derived theoretical quantities versus any raw observational parameter we always obtain a scatter diagram. There is no trend, the data has no correlation with onservational quantities. The redshift versus apparent magnitude is scatter diagram, and so is the largest angular size versus apparent magnitude, ditto for the spectra versus distance. In the cosmological quasar interpretation, none of the theoreticaly derived quantities mentioned above has any physical significance. Energy density typical of stars.
Radio lobes are of acceptable sizes, well within our galaxy.
Jet velocity much less than speed of light. This is no mere coincidence, it is a dead giveaway that quasars aren't extragalactic. Based on all of the laws of physics this is imposible and violates the laws of causality. The first reaction of any competent scientist to this paradox should have been to immediately conclude that the distance to the objects has been grossly overestimated. Unfortunately this did not occur.