Ours looks at Corona itself, giving a look at its feature set and controls for rendering in general, no matter what kind of work you do with Corona Renderer. Also, you get to meet the team :)
The SOA courses are specifically about architectural visualization, so kind of "architectural visualization when using Corona Renderer" (I have never attended a SOA course, so base this on their course description). SOA are certified trainers of course, so you can be sure that all their information is accurate - they will be taking our information on using the render engine in general, and then expanding on that into arch-vis specific scenes, details and uses. I also believe that they cover general arch-vis information, looking at things like composition and other such topics that we don't cover.