I will say this about Dorsett...I expect him to be out at least 8 weeks. I tore my MCL partially in college. I rehabbed at a D1 college facility (for soccer, not football), and I wasn't back and able to make cuts until about 7-8 weeks. At 6 weeks I was able to put a knee brace on and run, but I wasn't even close to full speed and couldn't cut on it.
This is just from my personal experience, but again, these guys are athletic freaks. I don't even try to put myself in the category with these kids physically. So he could definitely recover quicker.