Not entirely, the cell radio for one is different. That wider global compatibility is what probably nudged the 5 out, they wanted the first two tiers to both be as compatible as possible. Say for China Mobile etc.?
The 5s? Nice improvement.
Oh and "Mavericks"? They explained that at the time: it's a surfer break in California. Maybe all those images of waves and not a single one of Tom Cruise (with or without a couch) was a hint?