Less damage on S2000 driver and passenger....
Crash Test Summary

S2000 Crash Test Video

MBZ SLK Crash Test Video

 

It showed that they both did well in crash test. Where did it say that S2000 did better than SLK? Just want clarification.

 

The only thing I see different is that the S2k's nose crumpled but the door section and rear looked ok but the SLK's rear end also crumpled and twisted showing that the frame back there bent too....

 

Same number of stars, but the occupants make it out in a little better shape:
S2000 injury pattern

SLK injury pattern

The bowing of the SLK frame is worrisome. It indicates the possibility of deformation of the passenger compartment, which will be a major bummer if you happen to be inside it. The S2K from the firewall back looks undamaged, except for the rear bumper.