She was usually spoken of as being remarkably clever, but with the addition that her sister Celia had more common sense.
Celia is more sensible in this sense; but she is Sensibility, too, maybe not as passionate as Jane Austen's Marianne Dashwood but certainly given to sensation (the physical senses).
Dorothea does not have Eleanor Dashwood's common sense, mainly because she shares with Marianne great idealism, even romanticism, though expressed and channeled much differently.