Cinema 4D gives me so much control and opportunity to create real-to-life models, in this particular project, I have worked on creating a Sleeper Class Indian Railways Coach from scratch without any references and plugins. That showcases how much one can do in Cinema 4D, as well as, how much Cinema 4D has to offer. 

The intention of realism is not just the accuracy of the models, but also observing the little details of a model. The fact that not all windows will be uniformly closed, the fact that the stickering is slightly peeled off, uneven surfaces, and so on. Also other factors such as lighting, staging, camera, colours, materials, and so on come into play while rendering the inputs.