Motorcraft application chart indicates the following:
2010 Focus: G-05 coolant. That would be the Zerex version or Motorcraft Gold. All makes, all model is more of a DexCool formulation than G-05. Last time I purchased G-05, it was just as cheap at the Ford dealer as it was at a parts store. I had difficulty finding it in my area, so I went with Motorcraft.
2011 Fusion: more complicated. G-05 was used prior to 7/6/09 and the Dark Green Motorcraft Specialty Green coolant (not the same as the old school green) after that. Take a look and see what the Fusion has or find the build date, and base your choice on the info I provided.
Hope this helps out.