I have spent significant time at both resorts recently, and this is completely counter to my own experience. Both resorts’ cast is, on the whole, friendly and professional, but WDW staff featured far more folks who were snappish, bored, or unhappy while Unis featured more who exceeded my expectations in a positive way. At WDW, the cast at EPCOT was particularly uneven (and AKs particularly strong). The excellence of Unis staff and the spotiness of WDWs has been my experience for several years now.