"Nintendo's Wiimote, by contrast, uses three axes and measures the acceleration of the handset, not the absolute position of the remote. Using the absolute position allows people playing motion-control games, such as baseball, bowling, or soccer, to "use real world skills," said Sixense CTO and Chief Architect Jeff Bellinghausen. As in, if you know how to play baseball, TrueMotion lets you make strategic plays, like hitting a bloop single to left or a double to right.
But TrueMotion also makes a difference in how games are developed, according to Sixense CEO Amir Rubin. TrueMotion measures the exact degree of position of the remote every 10 milliseconds. When developers know the exact position of the cursor, there's less need to develop complex algorithms for games just to compensate for not knowing where the cursor is."