Welcome to Guitar Tricks
1 Maybe the type of wood they are made of
2 Maybe the strings you use
3 Maybe the the pick-ups or pick up settings
4 Assuming two people are playing, they are connected to two amps.
There are lots of variables in a guitar.
Fenders are made in several locations and parts quality is different in price range.
http://www.fender.com/#/kingman-usa-c
Basicly there are so many different models and style because players want a different sound.
I hope this gives you a little understanding of sound differences.
Gordon