I did not assume it, but apparently you took "brain in a jar" literal. That completely invalidates any argument, since the Chinese you're talking about, are not brains in a jar.
> There's no reason to assume an experience like love can't be replicated
There's all the reason, if only because a "brain in a jar" lacks organs for hormone production (e.g., adrenaline and testosterone). And no, you even haven't got an idea of how create an artificial adrenal gland or scrotum, and how to hook them up to an brain in a jar. There's all the reason to assume it can't be easily replicated.
And even if it could theoretically be replicated, there's absolutely no reason to assume Xiaoice can do that.
