You've mis-understood what @steemship was saying,

If you vote immediately after a post is made, then 99.94% of the curation reward will go to the author. If you vote after 15 minutes, then 50% will go to the author. Any votes made 30 minutes or later 100% will go to the curator.

(own emphasis added)

If you vote after 14 minutes, you'll forfeit something like 53% of Rewards due to you, not 99.4%

Read this post for a full picture of how it works/ when and why the rules works that way:
https://steemit.com/steem/@steemitblog/latest-curation-reward-solution

Our solution is to offer a reverse auction for curation rewards on votes cast within the first 30 minutes. The price starts out at 100% of your curation reward and falls toward 0% over 30 minutes using the curve (1-t2). The longer a bot waits to vote, the lower the fee will be. However, if someone else chooses to vote before you it would lower your potential absolute reward.