I'd want them to write the fight better from the start. If you establish that Mark is no match for Conquest in strength, don't have him win with strength. Its that simple.
Use teamwork. Use unconventional tactics. Use something mentioned in one of Nolan's scifi novels about what can hurt Viltrumites.
Hell, you know what would have been a neat subversion? Have Mark conflict with Cecil several times throughout the season, getting BTFO by the sonic weapon but getting noticeably better at fighting through it in the last couple times it gets used. Then, when the Conquest fight happens, have Mark beg Cecil to deploy the sonic weapon and it fucks up both Mark and Conquest, but the difference is that Mark is used to this and can still keep fighting and Conquest is having this happen to him for the first time and isn't prepared for it so he's basically disabled while Mark wails on him. THAT would actually be a decent payoff to let Mark get a bunch of good hits in, but have Conquest still be objectively stronger than him and he can still badly injure Mark even through the sonic weapon fucking with him.