Design studio critiques are key moments for students' learning and designing processes. During critiques, the representational ecosystem provides a setting for the critique to unfold. Tutors and students, while presenting and discussing students' designs, interact with each other and the representational ecosystem. In this article, a case study illustrates our method to measure the effect of a change of representational ecosystem on the critiques' activity. Our three settings include traditional desk critiques, 1/50 scale mockup critiques and immersive Virtual Reality critiques (with HYVE-3D). Each type of critique is analyzed by using video coding as well as protocol analysis.