But if you think a computer simulation of a human experiences the same qualia as a human, while a lump of coal experiences no qualia or different ones, you need to make that case to me.

Actually, I'd say you need to make a case for WTF "qualia" means in the first place. As far as I've ever seen, it seems to be one of those words that people use as a handwavy thing to prove the specialness of humans. When we know what "human qualia" reduce to, specifically, then we'll be able to simulate them.

That's actually a pretty good operational definition of "reduce", actually. ;-) (Not to mention "know".)