Hi:
The Tyros2 styles contain's the T2 voice map, and the PSR 3000 map is NOT the same, Is very much like if you want to go to 100 Main St in Phoenix, Az and you get the directions of 100 Main St of Los Angeles,Ca.
Because for example, T2 has more technologies and voice sections non-existan in the 3000, as an example, the Super Articulation sounds(SA), more Mega sounds, more Cool sounds, etc......besides the price that is more or less, the double o more, depending in options and add-ons you may get, of course, the Tyros 2 has no competition next to the PSR3000 witch for the money is great, but no a contender in sounds, styles.
In a nutshell, you may put the T2 styles in the PSR3000, but they will work only partially because of the missing voices, and even if you assign 3000 voices, it will not sound near to the T2, trust me, I am a keyboard specialist, and before I got my T2, I did owned a 3000 and God, knows, I did tried to do what you suggest, I am trying to save you time and agravations.
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mdorantes