Why the plane object has 200 triangles instead of 2?

If performances is the most important aspect in a game why the Unity developers decided to set the default number of triangles for the default plane to 200 instead of simple 2?

There should be some property when creating this and the other base models to refine the complexity, instead of forcing to create and import a better version inside the editor.

http://forum.unity3d.com/threads/176609-Why-would-you-ever-use-a-plane-with-more-than-2-triangles

–Eric

http://forum.unity3d.com/threads/102792-Why-is-1-Unity-Plane-made-of-10x10-planes

search FTW!

Searched but not found probably wrong words, thank you for the kind answer.

adding a simple popup to change it’s size would be a nice addition to do increase dev times.