I'm probably a bit late in throwing my tuppence but here goes.
Personally I think it's too subjective for graphs alone, the SD site in particular means nothing to me when I look at the graphs, and the sound clips don't cover enough ground to form any sort of useful opinion.
Rather than graphs, which don't really describe the sound (to me), plus so many of the pickups may look too similar to PAFs anyway based on graphs alone.
So why not simply state the original intent of the pickup, tell us why it was designed in the first place.
Then list some reference points for tone, and what will (usually) happen when a different body material / shape is used.
Perhaps adding something like may have too much high end when coupled with a maple bodied guitar or too dark for semis or whatever.
Name : Mule
Original intent : 59 PAF style tone for Mahogany LP style
Tone : Richer & sweeter than current Gibson xxxx pickups
Reccomended for : LP, SG, 335 for Classic Blues Rock tones
Peavey Wolfgang for tighter bottom end and improved middle.
S Type for xxxxx
Reference Points: xxx by Goverment Mule - Gibson LP
xxx by ZZ Top - Gibson LP
xxx by Cream - Gibson 335
Related Pickups: VH II, Stormy Monday, Emerald
Just a thought,
Kilby...