Yes I can tell you what is wrong: the dimensions are in px which will cause Fritzing to guess at what DPI (72DPI or 90DPI or the current 96DPI that Fritzing I don’t think recognizes) and uses that. It sometimes gets it wrong (this is displayed in Inkscape):
the dimensions need to be either in or mm to set real world coordinates. I haven’t seen a way in the Illustrator documents online to achieve that though. This post may provide some help:
Peter