Alright, first off I'm aware that the Asgard lost their intergalactic ships in battle with the wraith when the Ancients lost the war. Even though they lost their ships, they wouldn't have lost their technology. The Ancients and the Asgard were contemporaries and both had extremely advanced technology - the Asgard even as a splinter tribe that hadn't been receiving the benefits of the last 10,000 years of research by the main Asgard civilization would still have been unbelievably more advanced than the Travelers.By their own admission, they're barely able to keep their ships running, cobbling together and repairing them from spare parts. Their ships are half-derelict. So how does that flimsy trash heap of a ship destroy two Asgard ships? Obviously they aren't the standard Asgard mothership, but their technology isn't reliant on their design; those ships still would have had shields and weapons as powerful as any other Asgard ship. They should have ripped the Traveler ship apart with ease.