This is a crucial disc for me - I have three of them in my bag, all in varying weights between 165-175g. These are my go to for forehand layups (100-200'), I will drive with them off the tee, I have thrown them nicely with a tailwind up to ~320'. 

This is also a disc that I prefer to putt with - it's great for long putts for me, fights the wind nicely, and most importantly it does not skip more than 5' for me - I have a few Zones also and those get MASSIVE skips on fast, forehand layups whereas the Rat will bite much more consistently. 

This is the most comfortable forehand disc (non-driver) I have in my bag and I would be lost without it in a round. 

As far as the flight numbers go, if thrown with a decent amount of power, I would say that it's got more glide and less fade. I would rate it as 4 3.5 0 2 for my heaviest Rat (175) and 4 5 0 2 for the lightest (165) one. 

Personally, this disc has no utility for me. This disc is good if you need something to stick on a green (think sloping green), however, apart from that, this disc doesn't really serve any purpose. I found that it has almost no glide, and a little less fade than indicated. Bought one, threw it <10 times and put it in a closet. The graphic on it is awesome, however, it does not have a spot in the bag, as it just doesn't really have much utility. Also, I found that the rim on this disc doesn't sit too well in my hand, and its uncomfortable trying to get a good grip.