They're quite good instruments for the money but nowhere near that good.
Maybe not consistently. Some are better than others it seems. Many have minor cosmetic issue and nearly all require a set up on arrival. There are the rare gems from just about any manufacturer that are that good. There are also the occassional dogs, but in the case of Rondo purchased SX, reports of such instruments have a follow up post about how Rondo resolved the problem. But the SX line does seem to consitently have all the core attributes for a bass right.
They're quite good instruments for the money but nowhere near that good.