US fleet submarines compared with German U-boats

Were US fleet submarines more effective than German U-boats, and did they have the best torpedo computer?

Once early torpedo defects were overcome, US boats were highly effective; their targeting computer may not be uniquely superior in every measure, but it was probably the easiest for crews to use.

The mature American campaign compares well with the U-boat effort, but declaring one torpedo computer technically best requires more caution. Human factors matter because a system that crews can operate quickly and reliably can provide the strongest practical combat capability.