Who Would Win?

Groot

Monarch of Planet X / Guardian

Flora Colossus Physiology, Regeneration, Superhuman Strength, Size Alteration, Body Manipulation, Photosynthesis

None (is Groot)

Guardians of the Galaxy, Unnamed Kree covert ops team, formerly Galactic Council, Howling Commandos

Kal-El

Reporter at the Daily Planet

Flight, Super Strength, Super Speed, Agility, Stamina, Invulnerability, Telepathy, Intellect, Radar Sense, Psychic, Force Field, Blast Power, Healing, Weapon Master, Super Sight, Super Hearing, Phasing / Ghost, Psionic, Radiation, Unarmed Combat, Sonic Scream, Tracking, Astral Projection, Levitation, Vibration Wave, Heat Vision, Wind Bursts, Density Control, Energy Absorption, Heat Generation, Berserker Strength, Leadership, Longevity, Ice Breath

Kryptonian battle armor, Fortress of Solitude, Phantom Zone projector, Sunstone crystals

All-Star Squadron, Black Lantern Corps, Daily Planet, Daily Star, Good Guy Gang, House of El, Just'a Lotta Animals, Justice League International, Justice League of Aliens, Justice League of America, Justice League Unlimited, Justice Lords, Justice Society of America, Kent Family, Kryptonian Military Guild, Kryptonians, Legion of Super-Heroes, Metropolis Fire Department, Mystery Analysts, Nightwing & Flamebird, Nimrod Squad, One-Earth Regime, Red Lantern Corps, Sinestro Corps, Smallville Gazette , Special Forces, Super Friends, Super Powers, Superman Family, Superman Fan Club, Superman Squad, Superman/Batman, Supermen of the Multiverse, Team Mystery, The Authority, The Lane Family, The League of Titans, Time Masters, Timelost, Trinity, United Planets, W.G.B.S. Employees, White Lantern Corps