Correct, but that's mostly an aesthetic difference.
There is a difference in the ingredients, the ratio and quality of meat to other bits, etc. Please don't start the "what should actually go into sausages" thing again :C
(yeah I know but in a lot of cases it is the same stuff repackaged and the packaging - what it signifies to us and tells us about ourselves - is a big part of what/why we buy things)
As someone already hinted, it's not always exactly the same - they'll rate appearance and give deformed objects to the value/basics line, or use slight variations in ingredients (salt/etc) to cause differences in flavour/calories/etc.
It'll probably also vary between supermarkets as to which products are snob-traps.
Then what the hell are you still rabbitting on about?
All Spars around here are just oversized newsagents, and generally have a lousy selection of rubbishy foods. (Can't get decent cheese in them, for example.)