This is a good one. This is a tough one, but I believe that Dutch will take the win because he’ll be able to figure out a way to outsmart the thing and defeating it kinda like he did with the predator even though they are different aliens Dutch can still find a way to defeat the thing with his strategies while two of the team members have become infected by the dog while the others will survive and help Dutch win.
(Not to mention Dutch and his team has a lot of fire power like explosive grenades).