why i' getting two different speed in geting yay

first pool is http://water.eminer.pl ~ 12 ms

http://mania.com.pl/yay1.jpg

second pool is http://water.mining-man.com - ping ~ 70 ms

http://mania.com.pl/yay2.jpg

as you can see i get more yay in time at eminer.pl, but why ? Does it depends on ping ?