I think it is safe to guess that the Burke's being much larger ships, their sizeable bow sonars have the inherent potential to be more capable. Having said that, I agree that helicopters are the main ASW asset.That's difficult to answer, not to mention, both ships have different configurations within the class due to batch productions and refits. True sonar capabilities are also opsec on both sides. Don't ask these kinds of questions that you know you can't get a straight answer. US Navy has far more experience however and the better helicopter.