One of my websites serp position is different in IE and FireFox. Actually, the sites that come up in Google are a lot different between the two browsers. Why is this?
Mozilla firefox mostly shows result SERP for the cache of history it goes on to maintain. Try clearing that the issue you are facing would get resolved.
I have been in this field form last two years but i don't have seen such happen yet... Buddy it show same results in every browser if you have checked manually.
This may happen due to cookies or your are login with google account. that's the may reason you see different results in different browsers...