17:13:22 = loss (timestamp from you)
17:13:23 = win
17:13:24 = loss (timestamp from blockchain.info)
17:13:25 = win (timestamp from blocktrail.com)
17:13:26 = win
17:13:27 = loss
17:13:28 = win
17:13:29 = win

My point is not "this should have been a win", my point is: there is no fixed timestamps, so you could choose any timestamp in your favor without us detecting you are cheating.