Rossian
I go through DXB at least once a month on connections of 1.5 to 2hrs in Business class, and have had remote stands with 777 and the bus trip people have mentioned, but this has not been on a European bound flight. 380 are always at the terminal,s and as other have posted, get a buggy if you believe you are not up to the "DXB two step". Also if inbound flight is running late they will meet you at the gate to help get you through, though you may not see much of lounge, and or shops if that is your thing. Was last there on Monday if that helps, so info is quite current, do not worry, they will look after you especially as you are in Business Class, so you should be off the inbound A/C quickly anyway.
Regards
Mr Mac