No it can't; any pokemon faster than it that can take a focus punch (Mence...) will obliterate the thing. And skarm can nail it with drill peck or roar it away. Breloom can't really sweep teams unless you give it jask support and an attack move other than focus punch. breloom is VERY easy to counter...status absorbers FTW. Milotic is probably the best example actually. But yeah.
The whole point of using Endure and salac...