Nope, big differences. If your focus is actually on recording, you'd definitely want to go for Samplitude Music Studio, or even one of the bigger Samplitude versions, if your budget permits.
Trial versions of both products are available on the Magix website, so you might want to have a look and see for yourself:
Well yes Music maker is for Sample heads but the new version 16 realy cuts the rug i have both now a old version of samplitude but the new MM16 works on my old Midi Keybord samplitude never worked