The W211 E200 weighs more than 2 tonnes and has only around 40 more bhp than the Civic, it was no match for it. I own a manual 9th Gen Civic and it is very quick off the line as compared to my W204. The ESP program in these cars limits a lot of power going to the rear wheels during lift off and that coupled with its 2 ton weight is not a recipe for racing. You would've smoked him after the 100KM/h mark.
The delayed acceleration in your E200 can be caused due to a number of reasons. It could be bad engine oil, bad transmission fluid, wrong tires, or a failing catalytic converter. Do have it checked because a well maintained car should not lose a lot of power at just 100,000KMs, these cars are built to last for a long, long time.
Here's some statistics for you...
E200 Kompressor = 8.6 KG per HP / 0-100KM/h in 9.1s
9th Gen Civic M/T = 8.4 KG per HP / 0-100KM/h in 8.7s