Here's how:
Strength: Wesker (Can lift upto 25 tons)
Speed: Wesker (Mach 10)
Durability: Wesker (Can withstand tons of steel falling on his head without getting a scratch)
IQ: Wesker (Wesker's IQ: 180, MK's IQ: 140)
Battle IQ: Wesker (Was the leader of STARS)
Skills: Wesker
Combat: Wesker (Mastered nine martial arts for years like Tai Chi, Karate, Judo, anime styles of Kung Fu, Jiu-jitsu, Taekwondo, Kickboxing, Boxing, and Wrestling.)
Agility: Wesker
Stamina: Moon Knight (Doesn't seem to tire out)
Endurance: Wesker (Has greater regeneration healing factor)
Hax: Moon Knight
AP+DC: Moon Knight
Power: Moon Knight (Got his powers from being the avator of the Egyptian Moon God, Khonsu.)
Abilities: Moon Knight (Superhuman strength, superhuman speed, superhuman durability, superhuman agility, superhuman stamina, superhuman endurance, regeneration healing factor, superhuman senses, flight, immortality, divine imprisonment, power bestowal, and sky manipulation).
Experience: Wesker (Older and fought more battles for 12-13 years)
Winner: Wesker (Mid-High Diff)