In addition to not knowing how to spell anamorphic, you obviously also don't know what it means.
In the context of digital video, it means using non-square pixels. When displayed full-screen on a widescreen display, the resulting stretching will correct the geometric distortion that the frame has when viewed at 1:1.
Ninja Gaiden on Xbox was 640X480, whether you played in widescreen or not. When you selected widescreen, the console rendered the image with the pixels more concentrated vertically than horizontally. Viewed with square pixels, a widescreen Ninja Gaiden frame would make a circle look like on oval standing on end.
All widescreen Wii games are like this, too.
And yes, in addition to having well over twice as many pixels per frame, NG2 also has 2XAA, while NG has none.