Why do lower lv vampires get rarer VANITYS than higher lv vampires ?

[csb]

Here's what I think ,from lvl 21-25 cap at lvl25. Cuz after lvl 26 its harder to drop certain vanitys.
example ; farming for gamer leg at lvl lower then lvl 26, u have better chances for gamer leg to drop.
Cuz when ur lvl 26, stone helm start droping. So u have lesser chance at gamer leg now.
My total gamer leg drop is 10 so far

Correct. If there are high level pink drops in the list, and you don't want those, then use a lower level character. This was true with the recent DL Valentines event. If you were to farm with a lower level character, you would not get the pink gem drops. In Pocket Legends, farming in Alien Oasis with a 50+ gives level 50 drops, but farming with a level 45 will never give a level 50 pink drop only the below 50 drops. This is the way STS games have worked from the beginning.

For vanities, I think they are all level 1. So, this does not apply. Are there any vanities that are not level 1?