I did not test 997.2 PASM enough to do a proper judgment.
SPASM on 997.2 in normal mode is perfect for the road to my taste. Firm, but never bumpy . But you do feel how the wheels work on every bump. So if you do not like that , do not take SPASM.
Personally I like it, as I want to know how the road surface is.
In sports mode it is not realy suited to the streets at legal speed , unless you drive VERY hard or on the highway. Then it gives all it's potential. If you drive normally on town , the car jumps in the holes or the very uneven surfaces.
On the N'Ring , at first I preferred to have the car in normal mode , now that I gained speed, I like it better in sports.
On a nice flat track, sports mode is still too soft .
Generally speaking I would say SPASM normal is very slightly softer then the old -20mm , as it hardly jumps on the bumps, unless they are really big. SPASM in sport is harder then the old -20mm.
Generaly I still do think that in sports it has too much roll on the track
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997.2 C2S, PDK, -20mm