While the CSRs still botched your requests, you're bound to be disappointed if comparing a Delta Plat telephone CSR (the most experienced of the bunch). US telephone customer service, especially at the higher end for Elites, remains way ahead of their global counterparts. Add to that language and cultural differences and you're bound to be disappointed.

Of note: for small tasks (PNR notes/inquiries, chauffeur drive bookings, etc), if find that the EK twitter team (@emiratesupport) is pretty responsive and efficient.

I also find the SPG points to be a nice freebie bonus on my EK ticket spend. It's also a nifty (though depressing) way to track how much I spend on EK tickets. It does take 2-3 weeks to post, however.