I talked to Frank about the times.
As already discussed, they don't use roll-out like the American mags do.
The Inside-line article explains it pretty well. Personally, I agree, it's stated as 0-60, not roll-out to 60. As well for the German mags it's actually 0 (no roll-out) to 62, which, as mentioned makes several tenths of a difference.
So with all the above taken in, not hard to believe the difference going from 3-5mph-60, vs 0-62mph.
For the Merc, it is mentioned in the article that it was run on 18" (Continental) tires, as apparently with the 19" Michelin's the handling was particularly bad (understeer) and it was 2.5 sec slower.
Pure Stage 2/Vorsteiner/Supersprint/Helix V2/KW V3/Brembo/H&R Sway/Volk RE-30 + Sport Cups/Procede + Meth/AR Design + OEM Oil Coolers/M3 CF Trim/LED Steering Wheel/RIX Guage/Blacklines/GC Hybrid Camber Plates/Spec 3+ Clutch