Nexon consistently fails to check its new content, both for bugs and for poor design. They have no idea whether anything is too hard (remember Madhouse battery drop rate?), too powerful (choco buff), too laggy (eternal kill-quest lag during Haste event) or too rewarding (bff exp). If it's true that TWMS didn't have exp at all in the BFF Monster Park stage, then it's all the more puzzling that the GMS team added exp without thinking of how to scale it correctly. Does the real monster park give this kind of exp?