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That difference makes sense.
The truly random option you describe in another comment (#1286158) probably makes more sense. But the dopamine lover in me thinks it would be pretty awesome to take home the whole pot.
I suppose it would be possible that someone figures out an optimal zapping strategy that would lead to a reliable gain of sats (thereby defeating the purpose of Sybil fees).
This could happen with a reward spread out over some random segment as well, but not for a single big winner.