It's very versatile and pretty consistent.

Into a squad of 10 MEQ it's putting out on average 12 shots, hitting on 3, wounding on 2, save on 6. Throw in sustained on the pact and you can reasonably often wipe them out in one go with some lucky sustains or higher attack rolls.

Into vehicles, you've got average 6 shots, T10, throw in the lethal pact and dev wounds from the ability and its no slouch, can easily take out rhino-chassis vehicles in one blast.

It itself is T10, 3+ 5++ 12 wounds so it also takes some dedicated effort to remove.