I think a pretty good argument could be made that a gun that doesn't fire when dropped is technically superior.
Again, both passed all the tests the .mil wanted, then Sig was chosen because it was cheaper.
yup and
It’s just frustrating that technical superiority and quality control during manufacturing aren’t always mutually inclusive, as SIG Sauer USA has repeatedly proven.
In January 2018, the Director, Operational Test and Evaluation published its report on the testing of the XM17, which highlighted some deficiencies. Notably, the weapon initially performed poorly in drop tests, causing a discharge when dropped, this issue was fixed by replacing the trigger group with components lighter in weight. Additionally, the weapon performed poorly with ball munitions, causing several double ejections and stoppages. The analysis of this problem is still ongoing. The weapon performed well in other fields, with the exception of the mean rounds between stoppage failure, which is related to the previously noted issue
With thanks to dogtown tom and fishbed 77..and wikipedia