This is a tough one. The Widow's latest showing of slaughtering her way through Ryder's clippers, as well as season 1 feats of being able to fight both Sunny and Quinn respectively, for an extended period of time, shows how good she is. She's also pretty damn durable, as she recovered from getting dropkicked through a brick wall in the space of a few seconds.
I think the team takes a good fight, but both Colleen and Elektra likely get seriously injured/die in the process.