given what level MC reached and what he had to endure to get there, I'm seeing at least a 70% chance he's stronger in terms of base stats, though given how much he leveled up compared to how much he actually trained he's probably much lacking in gear, skills, and actual combat experience vs this "humanity's strongest"
honestly, I'm expecting him to not fight directly against MC and therefore survive to die another day, but MC and the elf will get away too since he wont be able to actually beat MC either, at least not while staying at a range where MC can't kill him back