I guess I'm some sort of über Mensch, but I have no difficulty at all to separate an iP* for a ditto samsung version...
Just as for many an "iphone compatible car" is the same as "it has a 3.5mm socket".
For those that honestly are confused I guess they should be really happy about LCD TVs, otherwise they might have ended up with a microwave oven in their living room (yes, it is that ridiculous).
(wait a minute, glass surface, four corners, Electrolux should be afraid)
I'm talking about "at a glance" or the briefest moment of confusion, as a highly informed consumer. Never happened with anything else. Doesn't happen with Samsung's current phones.