People who want a COLOURFUL!!! case don't really care what the material is called. It's colourful! People who want the leather case care very much that it is leather.
Similarly people buying the white Macbook don't care what 'polycarbonate' means, but to the Macbook Pro buyer, 'precision aluminium unibody', 'edge-to-edge glass' and previously 'titanium' are/were selling points.
Similarly people buying the white Macbook don't care what 'polycarbonate' means, but to the Macbook Pro buyer, 'precision aluminium unibody', 'edge-to-edge glass' and previously 'titanium' are/were selling points.