1.Dazzler looks good
2.Uni the pillion side is too sloping more ground clearance than dazzler very tall your mom may find difficult to get on the bike again dazzler scores
3.mileage is decent with both when in college a friend of mine had uni it gave 55kmpl inspite of ripping and bad treatment i dont know about dazzler
Bro dont forget only dazzler has rear disc which unicorn lacks