The 787 would be the only a/c in the EK future fleet that would be able to fly the route due to the length of the runway.
I am even thinking a 757 may be pushed in the summer months from DXB as the heat would use a lot of fuel! Please correct me if I am wrong.
I doubt EK will be around any time soon. If the SFB flights are on a 767 I cannot see why an A330 wouldn't be able to make the trip but I am not very technologically informed about a/c performance and you may have just seen!
Would think it would work from BRS though!