I literally saw the Raptor pin a Bronto. If the Raptor can pin dinos as huge as that, it has potential for PVP, although maybe it is hard to land... The core target of the Bronto is the belly, which is why it might have been possible.
On mobile a taming two of three of these and leveling them up will allow you to take almost anything. Keep their inv full of food and their health basically never goes down. One of the best tames I’ve found because they’re speedy killers and regain Health at unheard of speeds
TLC patch coming March 2018 adding a pack bonus wherein the leader roars and the pack gains damage resistance, movement speed, and attack speed buff for 15 seconds with a 45 second cooldown, will also gain a pounce and pin move similar to Thylocoleo which can be used on small creatures or players. Kill it to escape. Like so people can see!