Depends on the team, really.

If it's a small-scale team that's doing legitimate business and trying to do take over through the proper channels, the Argentiums - specifically Ardyn and (at times) Elio, would crush them solely through their well-refined business acumen, employing the conglomerate's ever-growing influence and connections to their clear-advantage.

If said evil team is being physically aggressive on their approach, however, a proper ass-kicking's in order - either by an Argentium, their bodyguards, or their private military force, followed by trying to both audit
and convince the International Police to launch an in-depth investigation on said team - providing additional resources on their end to help in the investigation. Ruin them physically and financially (and inevitably boost their own reputation in the process) so said team knows who NOT to fuck with.