Sadly - this is still the case, lots of overlap between F and C meals on both EU-DXB flights and DXB-US flights.
I'll be flying EK F next week (EU-DXB-US), and noticed, for example that the only F meals that don't not appear on the J menu on my ULH are the vegetarian pasta dish & fish dish. The remaining 3 mains are the same.
On my EU-DXB, 3 of the 5 meals are also the same - only two that appear on the F menu and not the J menu are the Pasta and the Fish dishes.
Of course, appetizers and desserts are a bit different - though there' still some overlap there.