If there are two persons on StackOverflow, 'A' and 'B'.
If 'B' up-vote 'A' more than 25 times, then this should be displayed on A's profile.
Now if 'B' have more than 500 reputation, it means its OK that 'B' is also participating in SO.
If 'B' have less than 500 reputation and up-vote 'A' 25 times, it may be that 'B' is a fake profile.
In case, if 'B' is deleted after up-votes, then this should be displayed on profiles after some particular such cases.
OR
their should be some stats like this:
10 up-votes from profiles with above 10,000 rep
27 up-votes from profiles with above 5,000 rep
50 up-votes from profiles with above 3,000 rep
45 up-votes from profiles below 1,000 rep
10 up-votes from deleted profiles.
20 up-votes from inactive profiles.