party vs stars difference

[straight6]

i dont know how to explain this
but im reaching the end of my rope in this matter
is it possible to be up 200k on partypoker with sng,s (sample size 10.000)
and being down 70k on stars also with sample size 10.000
with the note that my last 6000 sng's on stars the loss stabilized
i lost 70k in the first 4000
and now with vip milestone bonuses and ffp i can keep it even but with horrendous swings of 100 buyins up and down

right know my mind is playing tricks on me
i have the feeling that my allins are sucked out more on stars than party
suckouts happen and are part of the game ,i never ever complained about this on the table or anywhere else
when they happen just started up a new game and went on
but now
my last 100buyin downswing its so dominant happening in my mind that its not even funny anymore
i even got taunted from another regular who's got the same impression according to his remarks

i know the level of play is different on stars and party so a litle difference can be explained
but is the difference in skill realy that big?
does anybody know a good program to load my hand histories in to calculate my sklansky bucks from all allin matchups
to clearify this for me that im seeing ghosts
and that indeed the skill difference is dominant
or show that maybe my feeling is right that my sklansky bucks are behind the results
because of some rare statistical occurance

regards