Not Relying

He wonders whether having the horse registered into the system limits his horse. 

Aeryon look again at Aibou speed and it shock him that a horse could reach forty kilometre per hour

It is nearly reaching a racehorse speed. 

"Or maybe, the animals in this world is just stronger than the animals in my Earth" he thought to himself

Maybe that is also the reason why the people of this world is stronger. Had a stronger gut, and have a stronger everything

Aeryon did not notice this in the beginning but the longer lives in this world, the more he notices this. The base strength of this world living beings is evidently stronger than the world he lives in. 

Maybe, it has something to do with the air they breathe or the water they drink, or the food they eat, whatever the reason was, the people of this world is stronger than the people of his world