Im not wanting to start a debate on what is quicker between ek9s and dc2s etc but what you are saying is not completely true as its not as simple as what you are saying about dc2 always being quicker than ek9 with b16b
I have had a fair bit of experience owning a few hondas including a healthy dc2 and now a b16b ek9.
A friend of mine now owns my old dc2 and when you put my ek9 against it both off the mark and rolling start there is absolutely nothing between the two and this is the same on the track. I have also had a run against another friends fresh import 98 spec dc2 with decat, cat-back exhaust and I started to slightly edge after 4th gear. Also been up against a 240bhp ep3 and it was very similar to my old dc2 until 4th gear when the ep3 started to edge due to the lower ratio 6speed box.
My ek9 was rr'd at 189bhp/171bhp @wheels and has the rear seats, spare wheel & jack and aircon all removed,lighter spoon n1 exhaust, carbon mirrors, 4.78fd and lowered 50mm.
I know of another ek9 that has mostly mugen mods but still a b16b and it is also the same speed as other dc2s
The b16b is underated by some imo