The 320 does indeed have a higher output than the 270 (as the 270 does compared to the 220), but the E W211 body is heavier than the C W203. I don't know how the performance figures compare, but to me my E320 feels similar to my old C270. It is quieter, so maybe it's deceptive, and in fact it's quicker. I must dig out the figures to see.