Judo has (in general) a well defined promotion framework with clear expectations around the theoretical knowledge and practical application (in competition or other) needed to progress.
BJJ in contrast has a rather nebulous promotion system (You don't even need to compete to get graded.) that can vary dramatically from club to club or even from instructor to instructor within a given organisation. BJJ also has the common (and to my mind TMAish) theme of "paying dues" at a given belt, in contrast to other belted and unbelted grappling arts such as nogi, judo, sambo and wrestling, where you can rise to the level of competition your ability permits.
People comparing a bjj blue belt to a brown or purple belt to a black are off base imo.
You could (generally speaking) look at any two judo black belts in the UK or France and have a fair idea what they had to do to get there and their relative understanding of the art - i'm not sure you can really do that for a bjj blue or purple belt.
What you could probably state with reasonable certainty, is that the higher the belt you are in BJJ, the more likely it is that you teach the art ( indeed the ability to teach is probably a common factor in promotions to brown or black belt in BJJ), the same is probably not true for Judo.
BJJ in contrast has a rather nebulous promotion system (You don't even need to compete to get graded.) that can vary dramatically from club to club or even from instructor to instructor within a given organisation. BJJ also has the common (and to my mind TMAish) theme of "paying dues" at a given belt, in contrast to other belted and unbelted grappling arts such as nogi, judo, sambo and wrestling, where you can rise to the level of competition your ability permits.
People comparing a bjj blue belt to a brown or purple belt to a black are off base imo.
You could (generally speaking) look at any two judo black belts in the UK or France and have a fair idea what they had to do to get there and their relative understanding of the art - i'm not sure you can really do that for a bjj blue or purple belt.
What you could probably state with reasonable certainty, is that the higher the belt you are in BJJ, the more likely it is that you teach the art ( indeed the ability to teach is probably a common factor in promotions to brown or black belt in BJJ), the same is probably not true for Judo.