"Voting Power" is actually pretty complex. The amount of "ovation points" each unique ovation vote gives is based on a plethora of factors including how many ovation points the giver already has. We then do a logarithmic calculation to determine how many points will be awarded.
Basically the easiest way to view it is this: The more ovation points you have, the more weight your ovations to others will carry.
If you candle someones ovation eggs can you see how much weight they have?