So I just looked at Emirates redemptions for a Dubai > Chennai return, vs the *current* Etihad one (in J). Think Emirates may have a better J product on that route, though.
Emirates = 75,000 miles + AED 2,300 (?!?!?!)
Etihad = 52,000 miles + AED 650
Assuming they basically match up to rival airlines... not looking good.
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Interestingly, the F route from Dubai to JFK is actually fairly reasonable on Emirates - and that's a route I had been expecting Etihad to hike.