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The mobility of the first eldar list is unprecedented by the other lists that you have provided. If no model can have more than two wounds then you should not have a problem taking out your opponent with scatter lasers. You could do two things:
1. In objective games destroy your opponents scoring units
2. Use your jetbikes to cap objectives quickly.

The lack of scoring with the Tau would mean that your weak kroot would take a beating. You would have to table your opponent or lock them down turn one to take your kroot to the objective and contest the other ones.

I think you're going to have to take eldar on this one. You may have some problems against the space marine player but other than that you will be ok.

I believe that with the scatter laser twin link you are going to be ok. just make sure you prioritize correctly.