It's real and yes it has real sugar. The only packaging difference is a yellow cap on the 2-litre with some hebrew writing on top.
Yup, but it says "sucrose" on the label instead of "real sugar". HFCS Coke taste like the real deal, while the yellow cap Coke taste somewhere in between of Diet Coke and real Coke. It doesn't tastes like 100% real thing. I tried them side-by-side several times today, and yellow cap Coke is a noticeably off.
The 2L products are also generously promoted these weeks at 5x bottles for $5.00 [$1.00 per bottle]. I can't remember the last time I seen 2L Coca-Cola products for $1.00; the lowest that is usually $1.19.