Smart Shopping campaigns don’t require that much management. You can check the change history to see what he is doing there and if he is doing anything at all. I am suspecting he launched the standard shopping campaign without removing its products from the smart shopping one. This means they are running in parallel on the same products. Google will naturally favor the smart over standard.

For Search and other channels, it’s usually the case that if your website is running on e-commerce and has Google Shopping implemented, you’re more likely to get better results on Shopping than anything else Google. I don’t remember one single B2C e-commerce client of mine where Search fared better than Shopping, but that’s my personal experience.

Now does it make sense to fire the guy? I’d rather not comment to be honest. 🙂