Futures contracts are highly standardized whereas the terms of each forward contract can be privately negotiated. Futures are traded on an exchange whereas forwards are traded over the counter
Maybe due to social and cultural factors, crimes going underreported, and biological factors. Also taking the crime itself into consideration may also play a factor.
I think that their punishment should be harsher because they are expected to do the right thing in the positions that are given to them so if they disobey they should be punish severely because they are not above the law.