Comparing the Wookieepedia stats to the Liberty and Home One, it appears that the MC75 is a better anti-squad/short range fighting ship of approximately the same length. It mentions "point defense" emplacements and "proton torpedo launchers" that it's sister ships don't have.
I would like to know how many starfighter squadrons are carried aboard. I am guessing 6 or 8, with such a massive and prominent hangar.
I suspect this Armada ship stats will be:
Rebel large base
Profundity title (at least)
Admiral Raddus (at leadt)
8 hull
2 black anti-squad
3 command
4 squadron
3 engineering
3 fastest move
4 front shields
4 side shields
2 rear shields
front dice: 1 red, 1 blue, 2 black
side dice: 1 red, 1 blue, 2 black
rear dice: 1 red, 2 black
I suspect the cost would be right near 100 points.