Side by side.
Down to the numbers.

Unboosted stats. Creatures start at their minimum creation level; Omegas show untrained stats. Numbers alone do not determine a matchup.

At a glance	Mastodonsaurus Omega Level 26 / untrained
Class	Fierce + Resilient
Health	1,250
Damage	450
Speed	105
Armor	4%
Crit chance	5%
Crit damage	1.25×
Abilities	Bulwarkactive Dispersed Fierce Impactactive Alert Protecting Rendactive Leader Leechactive Medium Resilient Counter-Attackcounter Anti-Healswap in No Escapeon escape Passive Counter Attackpassive Passive on Opponent Escapepassive
Crit reduction resistance	0%
Damage over time resistance	0%
Damage reduction resistance	0%
Rend resistance	0%
Speed reduction resistance	0%
Stun resistance	0%
Swap prevention resistance	50%
Taunt resistance	50%
Vulnerability resistance	100%
Armor reduction resistance	0%
Affliction resistance	0%
Healing reduction resistance	0%
Daze resistance	0%