Spain's number one Genesis Player, Irina Sainz, was a Grandmaster, just like Night. Unfortunately, she was nothing like him. She didn't have a Legend as her teacher, but unlike Night she had good facilities that helped her train her skills properly. In the beginning all Luke wanted was to stay low key which was why he never flaunted the fact that he was Player Night nor did he send his character after some kind of publicized dungeon hunt.
Naturally from her perspective, it looked like Luke was either fed from a golden spoon or unusually lucky to have received such a good start. It was ironic how all of them blamed his success on his start when in the beginning Luke was probably the weakest character of them all. The truth was that Grandmasters were strong. Annoyingly so, but their true potential can only ever be unlocked once they learn or fully comprehend weapon aura.