a true canter has elevation and suspension. <--- Quarter Horses do not.
Ahhh....but the WP classes do NOT ask for a canter. None of the stock seat classes do. They ask for a LOPE. It is a very different gait. Nor do they they ask for a trot. They ask for a jog. Again, that is a whole different gait. I do NOT like to canter but I could sit a lope all day--it's like sitting in a old, comfortable rocking chair. (And I am assuming that you were still talking about WP when you made this comment.)
I do wish I was skillful enough with words to express the differences between the gaits to you. Unfortunately I am not. But I sure can feel the difference when I am in the saddle. Both the jog and the lope are meant to be ground-covering gaits that the horse can use comfortably for long stretches of time, as when you are working cattle or covering a lot of open space working fences and such. The western half of this country is a BIG place and that is where these gaits were developed and bred for--out where a few hundred thousand acres was a small place. I could certainly be wrong, but I have always had the impression that the trot and the canter were developed in cavalry/war horses centuries ago in Europe, so they do not have the same purposes at all. The high-stepping gaits helped the rider avoid getting a spear, lance, or sword run thru him.
Of course, I have never competed in WP (sorry but I've always considered that to be a woman's class, sexist as that sounds) and have always competed in working classes, esp. cutting and reining, where nobody's nose is dragging on the ground. Both classes feature a lot of collection and horses working off their hind quarters. Nonetheless, they are LOPING, not cantering, and JOGGING, not trotting, and there is a LOT of difference in how those gaits feel to horse and rider.
JMO, of course.
Rusty
edited to add:
Truthfully, my number one observation of western pleasure horses is that they tend to be MISERABLE. They are cranky while they're being worked, and even MORE cranky when they're not! As a whole, they just don't seem to enjoy their lives (and who can blame them??
This has been my observation as well. The sad part is that 30+ years ago this was NOT the case. As people have gotten more extreme, the horses have gotten more and more unhappy. Also another reason why I have never competed in WP.
To the OP: Why would you want to compete in WP instead of, say, reining? Reining takes some considerable skill both to learn and to execute, whereas WP is just endless circles.
Still all JMO, of course.
Rusty