9-A for suitless Spartans is still highly questionable. It's a thick hunk of metal, but it's still a hunk of metal and more like a mech rather than a suit of armor. Still, it's more like the guard was piloting a suit that's stronger than him rather than it actually connecting to him. I'm aware of the 20 mph and 2 ton lifting strength, but that's still well weaker than Mk VI. 20 mph to 8.9 m/s is still Athletic Human movement speed. Even destroying cars is a 9-B feat and I'm positive those suits weigh less than cars and other vehicles; not to mention the guards wearing it aren't even Spartans is further proof of this. A speeding Warthog is still 9-B and that's still heavily implied to have more impact than suitless Spartans at least.
Edit when a Spartan takes MJOLNIR off, than the suit could just be an empty shell. Crushing a full soda can is harder than crushing an empty soda can. There's a lot more empty space inside the suit meaning it might be easier to crush or dent when no one's even wearing it. Still, when not worn by anyone, it's still an inanimate object and should be treated as such, denting one doesn't mean you scale to it. Otherwise, Snake would be 8-B
Actually, I looked into it. Halo: Uprising takes place between Halo 2 and 3, which he does have the Mark 6 at this point in time. Statements say Mk 6 is twice as strong as Mk 5 yes, but I need to point another thing. The reason Fuel Rod Cannons are 8-C in the first place is because it took 2 of them to vaporize a fully shielded Holly who was wearing Mk 5. So if one Mk 5 Spartan was That much more durable than another Mk 5 Spartan, then there'd be an outlier somewhere. Either Fuel Rod Cannon gets downgraded to 300 Megajoules, which would downgrade both feats, or taking 6 Fuel Rods is an outlier than can't be used. But anyway, it appears to be Mk 6 so that has 8-C durability. Mk 7 is the only suit getting the "+" sign.
Again, Calc stacking is against the rules on the wiki. Also, where does 1000 pounds come from? You do realize we're talking about Spartans that aren't wearing armor. Additionally, John with Mjolnir is 990 pounds which is slightly less than 1000 and that's actually above average. Jorge-052 is the only spartan who's over 1000 pounds; (1030 lb to be specific). Also, does it really take that much energy to knock over a large person? All it really takes is a bad shoelace, unbalanced ground or element of surprise.
We can continue discussing and I want to wait for Soldier Blue since he has one of the best judgements here and is experienced with the series and past statements. I can take care of the accepted changes though.
Edit: I have edited the Spartans as well as Atriox and Fal Chavamee. Though, I've never directly seen Thel fight on par with anyone in Halo 5 or beyond, so I'm unsure and decided to leave his profile as is for now. But then there are other things to discuss. I have also decided to remove Tactical nukes from the profiles since they're pretty much outside help.