A raw file is a just a data dump from the camera sensor. It's what the sensor recorded when the shutter opened, nothing more.
All the rest is processing of that raw data. The camera has its own raw processor built in, but the only control you have over that camera processing is a number of presets ("picture profiles"). The result of this is a camera processed jpeg.
ACR is a completely different processing engine, with full manual control over all parameters. But it won't match the camera processing and isn't supposed to.