@giovane regarding route and fleet choices, I would think that Qatar is actually a better option, within 3-4 years Qatar airways will have the largest route structure of any middle east airline. They have already caught up to EK and are adding new destinations at a phenomenal rate. EK: 115 destinations QR: 115 with the stated intention of ~160 within 3 years
The fleets will look like this during the same time period:
QR
A319/20/21 (including NEOs)
A330 (a330F?)
A350 (launch customer EIS 2013/2014)
A380 (2013)
B777
B787 (arriving in a couple of months)
EK
A330/340
A350
A380
B747F
B777
The other big player in the ME close by to DXB, is no where near as ambitious, nor does it have the quality or capacity to compete with these two. Going forward QR and EK will be in a class of their own.