In terms of sells It greatly surpases SMB2.

SMB3 is similar to SMB and SMB2 but introduce new abilities for M and Luigi in the form of ''suits'' that, for example, allow M to fly for a short period of time. NSMB is a DS Mario game that has the feel of a classical 2D platformer but it includes 3D models so it would classify as a ''2.5D'', it also has many new features like power-ups, minigames etc.