My agency owns a number of Bushmasters, the local Sheriff's Department here carries Bushmasters, Texas DPS (after exhaustive testing) carries Bushmasters...so do lots of other LE agencies.
It would be tough to convince me that Bushmasters are poor guns. That having been said I like the S&W better.
I wasnt trying to impress you by stating who uses a particular brand...just saying there are tens of thousands in LE hands being used everyday with no major news story saying officers are dying due to their poor rifles.