This is particularly true for econ departments under B-Schools, like PKU GSM and THU SEM. Econ people need to compete with juniors from other departments within the school for promotion. For full professorship, the competition can be much more fierce.
PKU GSM econ department: 1A 2B. But it's only the very minimum to even submit a case. If that's all you got, you are not likely to get it.