Thunder has no advantage in BT download, because BT generally uses BitComet, which has blood-sucking protection, that is, it will not be downloaded without uploading, and BitComet seems to block the IP of Thunder users. BT is based on the fact that the more downloads, the faster the speed, the less thunder is used, and the more BitComet is used. Thunder users generally don't upload. Where did you get the speed?
It is suggested to use Thunder for those below 1G and BitComet for those above.