eclectic has it spot on, I have a reverend guitar with the Korina body. maple neck. ever so slightly brighter and crisper than mahogany body,
I would say that it's probably maybe even superior to mahogany body, but again the variability from sample to sample because it is so subtle may not even be noticed. the neck wood may have more importance to the tone.
in a blind test you might not actually hear it except when you're actually the one playing the guitar, you notice just a little more clear string attack.
are you going to specifically go for one, or are you looking at a specific guitar that might have korina that's a good value, I would say have no fear I don't think you can go wrong with it.