Are they intended to be? Assuming the burners are different sizes - I would not expect the same setting to equal the same wattage on different size burners, as intuition would dictate that a large burner would be more powerful for tasks like wok cooking. What does the operator manual say?

It really depends on the quality of the appliance; something like the Breville Control Freak can give you induction cooking with temperature control down to the degree, whereas my cheap countertop Tefal induction hob just gives a few settings with broad power ranges and you have to figure out what works best for you.