That's a good, simple explanation of what reeds are, but it suggests that using reeds allows 'bigger' ports, this is not absolutely accurate.
A piston ported two stroke has to have quite conservative port timing so that the primary compression does not cause significant levels of blowback, this restricts the inlet duration and limits volumetric efficiency, particularly at low revs.
Using reed valves in the inlet tract allows more radical port timing, so to say that the ports will be bigger might be true, but it's more to do with their positioning.
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If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing.
"a deathless anthem of nuclear-strength romantic angst"
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