Well obviously the Switch has much better hardware than the PS3/360/, undocked it's still considerably more powerful than them. On top of that it uses 2015 technology and has 4gb of ram compared to 512mb. It also has support for things like Vulkan, OpenGL 4.5 and OpenGL ES etc.
Given the Switch's much more capable hardware there is obviously going to be games that can run on Switch but won't run on PS3/360.







