Thanks! Looks like the differences are:
- Iris graphics 645 on the pro vs iris graphics on the air
- i7 cpus are clocked a little higher on the pro, which according to this benchmark is about 12% faster (https://appleinsider.com/articles/20/05/04/compared-2020-13-...) .
The big question on Air vs Pro is what the thermal budget is. Generally, I've found that Airs will down-clock pretty quickly when running computationally intensive work for more than a minute or two. Pros have more ability to dissipate heat, which lets them run faster for longer.