Ahh yes the creature which combined with a first level cleric who knows sacred flame or anyone with a ranged magical attack can easily kill a Tarrasque or other high CR monsters with no ranged attacks.

until the monster grabs a rock and hurls it at you

I think the draft horse is better even though it is 20 ft slower it has better states the this one

Or until the close combat monster used the ready action and one shot thefirst level cleric. 

horsey :)

The 2025 Tarrasque actually has a move speed of 60 feet so they’re already evenly paced. Coupled with a 150 foot cone attack that deals an average of 78 damage it would have 0 problem just outright killing the horse underneath the rider.

The draft horse has more strength but rolls 1d4 for hooves instead of the 1d8 for the riding horse. So Draft has +1 to hit but-1 for damage. which seems backwards from what one would expect. Not sure why the riding horse gets a d8 with those tiny legs.

Careful. Don't scare Mr. Horsey-horsey-horse. Nice horsey. Nice horsey.

SURPRISE, HORSEY! 

I like Horsey. 

This horse doesn't horse enough