Show me a demo of your engine which is more than a small room and at least shows the same level of bug freeness as Unity. Theirs shows of features and that to all users who download it. It might not be lighting fast, but at least it works everywhere where the minimum requirements are met.
Most users, including me and +- all above prefer 5% slower but working correctly on all systems, not only the developers machine.
I'm aware that this takes 5-20 times as much time as implementing the feature due to the fact that there are right now 4*2 generations = 8 generations of ATI and NVIDIA cards having support for Shader 2, but that is what actually makes an engine. Everything else is at best a tech demo or something similar that shows of a given feature on a given hardware.
Most users, including me and +- all above prefer 5% slower but working correctly on all systems, not only the developers machine.
I'm aware that this takes 5-20 times as much time as implementing the feature due to the fact that there are right now 4*2 generations = 8 generations of ATI and NVIDIA cards having support for Shader 2, but that is what actually makes an engine. Everything else is at best a tech demo or something similar that shows of a given feature on a given hardware.