Livyatan vs Megalodon

[JHG]

Livyatan

The largest of the macropredatory toothed whales. This monster is the unholy fusion of Moby Dick and a killer whale. Call me Ishmael!
Length: 17.5 meters
Weight: 57 tonnes
Megalodon

This is solid proof science is better than fiction as Jaws is no match for this sea monster. This is the lord of the sharks.
Length: 17 meters
Weight: 59 tonnes

[Detective Osprey]

I voted for Megalodon because it may have hunted for whales.

[JHG]

True but not big predatory whales.

[Eremurus]

Depends on who gets who first. Both initial bites would be lethal. I think the edge would go towards Livyatan, due to slight size increase.

[Kyng]

Depends on who gets who first. Both initial bites would be lethal. I think the edge would go towards Livyatan, due to slight size increase.

Same, really. There doesn't seem to be much to separate them other than this.

[Eremurus]

Depends on who gets who first. Both initial bites would be lethal. I think the edge would go towards Livyatan, due to slight size increase.

Same, really. There doesn't seem to be much to separate them other than this. 

There's one other scenario- which one has faster maneuverability or stealth.

[Nakago]

This fight is about equal, but thanks to Livyatan’s size advantage, it may beat Otodus megalodon a little more often, but it would be close.

[JHG]

Depends on who gets who first. Both initial bites would be lethal. I think the edge would go towards Livyatan, due to slight size increase.

Same, really. There doesn't seem to be much to separate them other than this.  

There's one other scenario- which one has faster maneuverability or stealth. 

These are multi tonne monsters. Stealth will be useless.

[Eremurus]

Same, really. There doesn't seem to be much to separate them other than this.  

There's one other scenario- which one has faster maneuverability or stealth.  

These are multi tonne monsters. Stealth will be useless. 

How else do predators sneak up on prey?

[JHG]

What I meant was that in this particular fight, the two giants will find it impossible to hide from each other due to sheer size alone.