I'm going to assume that they are not the same. The Halo 5 forge controls have been improved significantly in many ways, adding many different functions that are not present. The controller controls are not even remotely similar. I have not used M&K at all for MCC though, so they may have more similarities than the controller settings.
Thanks for the reply Well I just got the game and it not the same for the PC. I have now Idea how to use forge in Halo 4 MCC for PC. I have not seen any TUTS for the PC version. So I am at a lost because I want to start making maps and it sucks!