I don't know why Marvel is so inconsistent with their strength ratings. In 2004 they had Carol, then called Warbird, in the 25 to 50 tons range then they jumped her up to Class 75 in Civil War Files.
"Class 75" strength means a character in that category can lift somewhere over 50 tons but not more than 75 tons. Carol being able to lift 70 tons still means she has Class 75 strength.
... because (sadly) there isn´t anybody left who actually CARES about these things...? It´s back to the pre-Shooter days when pretty much every writer had free reign to do as he well damned pleased. There isn´t a Mark Gruenwald (or a suitable replacement) around to care about these things anymore.
HONESTLY, my comment has no desire to fan any animosity (for real). But, IMO, I find nothing more annoying these days than the legions of die-hard Batman fans who swear that he can defeat anybody "with enough prep time". High time to retire that old tired horse of a phrase, please... . At least come up with a new version of said phrase, I beg thee. The only other one which comes kinda close, but not quite, is "sun-dipping Superman"... . It´s weird that DC fans are so hell-bent on demonstrating the supremacy of their heroes, when you stop to consider that most of them are so overly SUPER(lative) in their regular levels of power to begin with.
I truly don´t see the appeal of a hero (be it Batman or Superman or whomever) whose main "power" is being invincible. To me that´s just plain boring, not fun at all.