Decided I wanted to level a Sapphire Cub up as a battle pet. I really like the pet and figured I wouldn't use it much for pvp pet battles since it was a poor. It has been a struggle. The thing is at level 21 and still has trouble battling pets of similar level. I'm going to finish leveling it to 25 but I tell you I will never level another poor pet no matter how cool looking he is. They're simply to weak even for battles in the wild unless you have some seriously strong pets with them.
Mine is poor. Their level might be random as I also have the Jade Owl which is uncommon. My engineering pet the Mechanical Panderian Dragonling is also uncommon. To tell you how poor my poor level 21 Sapphire Cub is it has 730 health while my uncommon level 12 Jade Owl has 712. 9 levels separate them and yet the Jade Owl is almost the same health and can survive just as well as the cub against level 23 wild pets.