Scaling based on your bodyweight or the average bodyweight of a CFer wouldn't help a lot, because strength/conditioning and weight are not always correlated. I know plenty of people who weigh far less than me but can easily handle more weight in a metcon, and vice versa.
I'd say for a workout like the one you posted, if you're putting the bar down more than 1 time during the early sets of 10 then you've gone too heavy...maybe as many as 3 drops during rounds 4-7, but those should be quick drops to catch your breath then get right back on the bar. If you're going to err on the light side or the heavy side, you're better off erring light because you'll still get the desired conditioning effect and not risk getting hurt by doing lot of sloppy reps with bad form for time. If you finish and realize you've gone too light, then you know you can handle more weight next time a similar workout comes up.