Any team with a high number of delayers could probably take wins off of Apostles and BO, delay is just hard and frustrating to play against
The right mix of iDevices can probably get wins on Alumni Mixed too, I don't think they'd be able to win a series but they might get a few wins

I think GTEAM and SL are pretty beatable though, so I could see VIS, CRZ, and other teams beating them