Why less banners work better than Thousands ???

hi There,

I try to make a new promote in bingo today i got thousands of banners in 9 languages make me crazy too much so i try today only to promote 1 banner per language ??

get better results ??

who can explain please

1 banner per lamguage is better than making tons of doorwaypages ??? why please ?

thanks a lot have a nice day

I don't understand you

before i promote 300 banners per languages
now only 1 per language and get best results why please ?????