Here is an interesting question.
in Christianity, the God controls the people life and destiny.
in Buddhism, the kamma plays an important role to determine destiny, future life and good and bad. So, can we say God =Kamma?

let us continue to go in this direction of thought.
let us assume Kamma =God. what is the role of the Buddha then? is the Buddha less powerful than Kamma?

Answer:
In Christianity, the God controls the people life and destiny.
In Buddhism, the kamma plays an important role to determine destiny, future life and good and bad.
so, can we say God =Kamma?"

In Buddhism, there is no almighty, all controller God. so, this God does not exist, but kamma does exist. so God does not equal to Kamma.

Kamma is considered as non material, so it is a kind of power or condition according to the 24 conditions (patthana).

Kamma happens to all sentient beings, including the Buddha.

Once someone become a Buddha and also arahant, because of no defilements, the actions he done is no longer called kamma, it is called kiriya or functional.

After he passes away, he has no rebirth,  he escapes from the round of rebirths and deaths, in this way, he escape from the working of kamma.
Thus, the Buddha is more powerful than the working of kamma.