A double or treble only has one div. Where as an allup bet has multiple divs.

With an allup bet you also have a choice of races and whether to place individual bets.

Even if you lose your $10. You have still turned over more than that if your 1st selection won.

Let's say you had 10 $10 allup bets. They all lost - so you're down $100.
But what if in all 10, 1 or 2 selections won.

You've actually turned over several hundred dollars or more. If you had 2 out of 3 right in all ten, there's nothing wrong with your selections, just need to change your betting strategy.