300 points less still leaves Blockhaus as the clear number 1. Even excluding the first 10 km doesn't change that.Those scores cannot be used for anything IMO. Were not going to the top of Blockhaus
I think the scoring method is bad for long uneven climbs, as there's no penalty for descents, and I think it overestimates the difficulty of extreme gradients (I already mentioned altitude). Zoncolan has the same score as Finestre (and both ~130 points more than Stelvio), but I think the latter is harder.
That said, I think it captures the difficulty of climbs quite well.