Because how good a model is is mostly just what the training data is at this point.
It's like the personality of a person. Employee A is better at talking to customers than Employee B, but Employee B is better at writing code than Employee A. Is one better than the other? Is one smarter than the other? Nope. Different training data.
It's like the personality of a person. Employee A is better at talking to customers than Employee B, but Employee B is better at writing code than Employee A. Is one better than the other? Is one smarter than the other? Nope. Different training data.