With Bootcamp, once you load Windows, it *IS* a regular Windows PC. As long as the hardware set (processor, RAM, free disk space, GPU) are compatible with the requirements of the program, it will run.
They may have been talking about Parallels, which has much more limited emulation of GPU functioning (the CPU is virtualized but the GPU is not). Parallels is a different solution that lets you run Windows and MacOS together without rebooting.
Alternatively, they may have just been talking smack.