Difference among "when it comes to", "as far as" and "regarding" [closed]

I was wondering if there's any difference among these three, maybe some of them are a bit formal and some are colloquial in daily conversation? Thanks in advance!

For example,

I'm as good a cook as she is except when it comes to pastry.

Solution 1:

These phrases overlap a lot. There are shadows of difference but they are weak.

When it comes to ... may suggest that you have already considered some implied or stated precedent. I like wine but when it comes to spirits, leave me out.

As far as ... may suggest a complete overview of the following argument. As far as I can see, there will be no end to this Brexit disaster.

Regarding ... may have the feeling of initiating a discussion. Regarding grammar, there are many inconsistencies.