Please checkout our source code in gitbub and use diff command to see how much different between EDC and Monero. We have removed many functions related to hard fork version (ei: if hard_fork1 then else if hard_fork2 then ...). In Monero source code, when process transaction it needs to check if it is version 1 or 2, or if it use ringCT or not and so on ... It makes the serialized object large and obviously redundant to EDC. We've also removed the build-in donate function and not using payment id, integrated address, so many functions related to extract_extra_data to find payment id/integrated address also removed.
If you look into the binary size of Monerod/Monero-wallet-cli and Edollard/Edollar-wallet-cli you'll see that Monero's size is about three time bigger than Edollar.
You'll also see that there are some function like "fixup" in Monero source code. One of the example is the problem with block 202612 which could not be validated by the nodes. This is not happened to EDC.
In fact, there's many more, but I think it is enough for you question.