Simplisticly:
Pattern is centered on precise, large maneuvers... loops over 60 ft high... sometimes over 150 ft high, perfectly round.

3D is centered on quick, small maneuvers, loops over 30 ft dia being considered HUGE.

Pattern takes up the whole flying site. 3D can all be done over the runway.

The Kaos is designed for the old center stage Pattern competition style, and has too high a wing loading for decent 3D. The wing is also too thin.. not enough drag for a lot of 3D stuff, and the control surfaces are too small for the abrupt maneuvers needed for 3D. However, the Kaos is still competitive for Sportsman and Intermediate AMA Pattern competition... (not bad for an appx 25 yr old design...)