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It should be about the same. It is the same micro-architecture which is why they are still called M1. There are just more of the same cores.

It was kind of confusing the way Apple did it but with the Intel 13" Macbook Pro. There was the "2 Thunderbolt 3 ports" which started at $1299 and the "4 Thunderbolt 3 ports" model which started at $1799. Other than the ports the 4 port model had an entirely different generation CPU and the Touchbar. When you compare it to the "4 Thunderbolt" model it is replacing it is a slightly more palatable $200 increase. They are keeping the 13" M1 Macbook available as an entry level Macbook pro.

At least it is a USB-C terminated on the charger end. That means you can reuse existing USB-PD chargers while only needing to replace the cable.

The previous "high end" 13" Macbook Pro started at $1800 so this is a $200 increase for larger higher resolution 120Hz screen, much faster performance, and all the ports they took out years ago.

The 2015 15" Macbook Pro was 1.8 cm thick. The 2019 16" Macbook Pro was 1.6 cm thick. The mew 2021 16" Macbook Pro is 1.68 cm thick. So the 16" got slightly thicker than the old one but not as thick as the old 15".

The 2020 13" Macbook Pro was 1.5 cm thick. The new 2021 14" Macbook pro is 1.55 cm thick. So that is only 0.5 mm difference.

It was written very small in grey text on the bottom right of the slide. I didn't notice it during the presentation but people posted screenshots on Twitter. The "Compact pro PC laptop" is Razer Blade 15 Advanced (rz09-0409ce53) and "High-end PC laptop" is MSI GE76 Raider (11UH-053). You can see if you pause at 22:46[0]. Both of these have RTX 3080s and in Apple's chart their chips are slightly slower but at much lower power. What we don't know if what benchmark they used for this comparison since 375 "relative performance" isn't a defined metric.

[0] https://youtu.be/exM1uajp--A?t=1366