Someone a few weeks back suggested the same thing about this company.
A project of this size is not going to be in the hands of a fairly new company, will they have the resources in place of a project this size? Insurance capabilities?? Think the answer will be no.
It will go to one of the big boys in this field.
Wouldn't be uncommon for multiple firms to be involved depending on relationships, specialty etc. would make sense if moshiri knows these from building the Emirates and then hires a larger firm for the full thing.