Would you like an in-game parser?

[Reinha]

I mean, when I beat a dummy under the time limit of 3:00, I wish it could tell me my performance somehow (and not by going to an EXTERNAL SITE to calculate it). I was hoping it would give a rank, like from F to S, so that at least it tells you how you went in case you failed to beat the dummy. But nope, it just vanishes and that's it. You're automatically ready for the real fight!

But yes as of now, SSS is just a waste of resources and I do hope they add more valuable feedback in the future (I doubt it)

If you beat the dummy, you can calculate your performance compared to the requirement by dividing 3 minutes by your completion time. For example if you beat it in 2 minutes 30 seconds (150 s), you did 180 s / 150 s = 1.20 = 120% as much dps as you needed. So 20% higher than the requirement.

If you don't beat the dummy, you can see your performance by looking at the remaining HP % on the dummy as the time expires. If it's at 20%, then you only did 80% of the requirement.

Do don't need actual damage numbers to see your progress.