Comment 3 for bug 997571

it looks like the difference between the two objects was probably caused by numerical error which has been magnified by the use of the scale factor of 450 : scale(450,450)

attached is the same file in which the scale factor has been removed and the size of 450 has been explicitly typed in everywhere. The two circles now appear to be the same.

There is some analytical error introduced by the use of Bezier curves but it is relatively small, significantly smaller than what is shown here, see Bug 332735