Why should it transfer? Just because you are a great software engineer(as determined by your 23K rep. on SO), doesn't mean you are a great chief and should have a 23K rep on the cooking SE.
If I have demonstrated I'm not a spammer by having a solid score on SO then I should be allowed to post a comment straight away on cooking.
That's the reason for the 100rep liking bonus - it's a grandfather clause
edit: I was asked a question which was perfectly answered by rtg. Should've provided more substance, but I wanted to endorse this as being exactly what I was talking about.