The JC Penney plastic ships seem to be smaller and less detailed in some cases than their Titanium counterparts! I discovered this when I opened Darth Vader's TIE Fighter today- see the pics attached for comparison (Titanium TIE on the left, JC Penney TIE on the right).
I have the Imperial Shuttle, too, and the Titanium one is larger than the plastic one as well!
There's some interesting trivia for you
And for the record- Darth's TIE cockpit IS see-through and NOT painted over- but the plastic tint is very, VERY dark...