Dude the UNSC is not in anyway "the good guys" they are just a government body ruling over humans. If they were such "good guys" why would they Insurrectionists exist. Right now in the Halo universe they aren't even the most technologically advanced. Also stop attacking other people in your arguments, it puts u in a worst position and is not supporting your claim. If you're so serious about this create a different fandom for Halo.
Jorge was never a SPARTAN III he was a SPARTAN II. the Covenant wouldn't care how much they lost in that battle since their empire was vastly larger than the UNSC's, and Reach was the most costly battle for humanity since a majority of the SPARTAN II's died there and most of the UNSC fleet was lost their. Also in a battle it would take around 5-7 UNSC ships to take down a single Covenant ship, humanity only cut down a lot of Covenant ships due to the MAC cannon platforms.
Yup army troopers were awesome, but I still prefer the marine battle dress more. Maybe if there was another home planet battle they could be reintroduced.