The Harmonizer and vocal input of the Tyros in my opinion is not at all a professional quality.

The Korg's is very good, uses and XLR input, very high headroom, no distortion, very clean.

As for the drums and basses, the Korg is a more live sound, meaning, you could mistake allot of it as a live drum sound recorded,

The Tyros is a very highly polished studio version, sounding very compressed and almost too polished.

I think Tyros uses their on board effects much better than Korg does especially in the electric pianos