maybe at suppressing multiple squads spaced out, but with rapid fire it should be fairly easy to suppress squads that are standing ontop of each other. The vickers would probably be the worst here since it has a tendency to kill models and then suppress.
Situationally the Vickers and maxim trade that title I feel. The Vickers can kill too fast for it's own good but it also has the wider arc so they can't escape fire as easily.
And at least the Vickers is good at one thing. The maxim is just meh at both