At day, she's worse than LWMMG. At night, she worse than LWMMG on her first magazine. On fights that want more than one mag, well, if you're that far into the game you likely have better options. Like Lewis Gun. Which you can get from clearing an event map. So....yeah.

In protracted fights that need exactly two magazines, at night, against armoured enemies, she can shine, if her skill is maxed out… we'll let you know if such a fight will ever happen.