If all models were equal then sure. But for professionals who use these to solve complex problems and need correctness above all? The models and weights are not equal and interchangeable.
I use them every day for coding and Gemini 3 pro, Opus 4.5, and GPT 5.1 (haven’t tried 5.2 yet) are basically identical in terms of ability. Opus 4.5 has a slight edge in my personal experience so far.