Try reading the specs again, it's important that you understand them. It says that each plugin comes in a 32 and 64 bit version and tells you that it comes in a variety of formats, including audio units which is what Logic uses.
If you are using Logic Pro X on macOS Mojave, there are not any compatibility issues with the CFX and this setup. The CFX will install with both 32 and 64 bit components but you do not need to choose which one to use. If you do run into any issues with this, feel free to reach out to us with the Submit a Request option above and we can take a closer look with you.