I don't disagree that animals (cows in this case) in nature (whatever that looks like at this point) do suffer and are constantly under fear of predators.

However, I think saying that there is "no good measure tape available" might be intellectually dishonest since we can probably come up with a rough model to optimize for the minimization of global suffering of all beings involved.

Obviously, most mental models have a higher weight biased for humans rather than animals, so a suffering factor for humans would have a higher multiple than for animals. That is where most of the controversy seems to be.