Our reasoning is already on the page, so I will not repeat it here. We do our best to judge by the user written descriptions of statements. Unfortunately sometimes the outcome is not as unambiguous as we want.
How unambiguous does a bet need to be before you decide its unambiguous?
The bet refers to a device as anounced in this thread:
https://bitcointalk.org/index.php?topic=87934.msg966886#msg966886 It is quite clear that the device in the photos Luke posted is not what is defined as a device in the advertisements on BFLs webpage. So in fact no device as defined by the bet was demonstrated to be in hands of a non-BFL employed customer before 01 april.
So at least one term of the bet was not met.
This in not ambiguous!
You have not examined this carefully and your decision is flawed.
So please give some better reason for your decision than: "We have carefully examined both sides of the argument. "