What is the fine-grained topic of the following text: Whereas, the Yamaha R15 generates 17 PS at 8500 RPM and 15 Nm of torque at 7500 RPM, while the Honda CBR150R produces 18.5 PS at 10,500 RPM and 12.66 Nm at 8500 RPM. Only return the topic.
Comparison of Yamaha R15 and Honda CBR150R's performance specifications