that's not even debatable. Toy Story 3 managed to create more emotion in it's scenes then even Empire. The scene where Han is lowered into the carbonite chamber is great but the incinerator scene is far more dramatic and gripping.
Like I said Lots o is far more menacing villain then Emperor palapentine could ever hope to be.
*Wonders if he's a child*
I will give you this, though: the incinerator scene was intense. But no way any pink stuffed bear could compare with Palpatine.