At least WL have some abilities to heal pet and only a 15s cooldown. Sure SH can rotate pets but the best buff for your build will always come from one pet which means 30s cooldown + twice the cast time. You also have tactics that buff you when pet dies, all SH get when a pet dies is less damage due to losing out on buffs. Correct me if I'm wrong but War Lion is way tankier than squigs too.
Also our ranged pets are bugged and will often go almost into melee range to attack, plus if you want to do anything in a keep siege other than sitting at the backline watching the action, you will have to go into AoE and even with pet on passive it melts instantly.
But hey if WL's would be open to make the pet just a visual asset that can't attack or be killed and the same is done for SH I'd be all for that. Pets are worthless in ORvR anyway for anything other than solo or small group roaming.