I'd say that the Giant has better components. I checked the base Vita and Vita Sport and both essentially have bottom end mountain bike components. The Giant at least has lower end road bike components.
On the Giant you'd be able to replace the chainrings if needed. On the Specialized you'd have to replace the whole crankset.
The sales guy might have a higher profit on the Specialized.
You'd need to replace the pedals if you were wanting to go clipless. The pedals it comes with are platforms (aka cages) with toeclips (aka clips). Toeclips can be removed if you don't want to use them, though I don't know if the pedals themselves are double sided.




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