No I would not say that Xfinity internet is good for torrenting as they will terminate your internet account if they catch you torrenting and they are watching closely for people torrenting on their network and will suspend or terminate your service when caught.
The best you can do with any internet provider is use a VPN that helps hide the fact that you're the one torrenting but still they may find out.
However when using a VPN and a good torrent app it is much harder for the internet provider to see what is actually going on.
The VPN encrypts all of your traffic, so the ISP can’t legally see the contents of the packets themselves because decrypting encrypted traffic is very much against the law unless you are the rightful recipient or the government.