Horse vs. 18 men in tug-of-war - GIF

[Frank S]

No contest at all note hoe the horse powers off using both hind legs in short piston pumping thrusts until it senses lest resistance then just goes into a walk.
The humans although their total combined weight would probably be close to double the weight of the horse and technically should be capable of producing a combined power of 3 HP using the average human Hp expectancy of 1/6 hp per person are unable to coordinate anywhere near their full potential Partially because they were not trained to function as a unit. Had this been 18 of the workers who were used to drag the huge stone blocks the pyramids were constructed from they would have easily given the horse some stiff competition they may not have won but would have been able to hold their ground much longer.