I wanted to compare the DLC for Sword to that of XC2, but the truth is that I still haven’t done everything in the XC2 DLC yet! I have completed around 90% of the DLC for the main game, but I still haven’t even started on Torna. I will get it done in the future though, likely next year. But even if I can’t compare the DLC for S/S to anything, I still think it was good, fun and enjoyable.
I agree with you that the second DLC for this game was really really great. It was worth my money (but the original purchase... I don't know if it was). However, the DLC (including Torna) for XC2 is possibly the best DLC ever released (from a content amount and enjoyability) and I don't know if it's fair to compare the two haha. Hopefully when you finish it you'll come to a similar conclusion!