A low wing can acheve this just as well but not with a totally flat wing. For this configuration to acheve neutral stability it is neccessary to use some dihedral, not a lot but some. This dihedral effect can also be acheved by wing taper and or root to tip airfoil transgression.
It can achieve the neutral roll stability through dihedral and LE sweep but that often screws the "just as well" aspect of achieving it. Dihedral and LE taper (which usually gives dihedral effect) are the primary cause of rudder-roll couple. When the rudder (or anything) yaws an airplane with dihedral, the leading wing gets more lift and the retreating one less. And the airplane starts to roll. Which definitely isn't what the term neutral implies especially when it's applied to the concept of neutral in the roll axis.