xxc 1000 vs xmr 1000

Hey everyone I’m new to this site.
So get right down to my question I got the cash I’m ready to buy but I’m questioning now on what it is I want I’m sure this question gets beat to death but I haven’t seen the answer I want yet. 2016 XMR or xxc 1000. Ride more trails that I do deep mud however I would absolutely end up putting 30 inch tires snorkel kit and winch on the xxc if I went that route. so my question is take the big tires off the XMR and how well do they do on the trails. I know the XMR have the better diff, and has the extra low range gear but like I said I want to know take the big tires off of the XMR how does it do on the trails. I also noticed that the suspension on some sites says they’re the exact same other sites say Q S3 after the Fox Podium for the XMR and some sites say RC to after the Fox Podium on the xxc so what’s the difference