golden cave; sta vs Belli

Hello just wondering, for farming belli in the golden cave extra islands. I have the choice between 15 sta and 20 sta, cleared it both few times now. but it seem that other then added experience. the 20 sta and 15 sta gives about same amount of Belli?

or was my luck bad when I tried the 20 sta and far less dropped? it is only 5 sta difference but since i am ftf I have to wait 50 minute just to get 5 sta...

Thank you.

I think you are right. The most I have gotten from 15sta run is 610k, and 20sta run is 820k. Both come to pretty much 200k gold per 5sta.

I must be extremely unlucky... I average around 30k for 15sta and little over for 20sta.

I get around 26k in 15sta and got 46k in 20sta... maybe im doing something wrong.

Must be random... Just did 20 sta and only got 25k. -_-;;

Im pretty sure its related to your pirate lv.
On my PL 90 account im getting alot more xp then, say, PL 35. Cant remember exact amount though

Oh shoot I added an extra zero there lol.

It should be the most I have gotten from 15sta run is 61k, and 20sta run is 82k. Both come to pretty much 20k gold per 5sta.

I see... so pl level also determine the belli drop amout? Did 15sta and compared to my past run amount. Around 30k seem like the max amount I have gained.