The performance of the Snapdragon 8 Gen 2 GPU is already about 10-20% faster than the A16 chip, depending on the benchmark.
Even if Qualcomm only gives the Gen 3 a 10% performance increase, that is enough to beat or even surpass the A17 in gpu performance (rumors suggest something closer to a 30% increase). The Gen 2 already outcompetes the A16 in GPU power consumption and efficiency as well. This may change with the A17 since it’s on TSMC’s 3N node, however this node has been having issues which is why TSMC introduced the 3NE and 3NP so we will have to wait for power usage numbers from the A17 to see.
Overall I’m disappointed with the improvements between the A16 and A17. 10% on the CPU and 20% on the GPU (due to have 20% more cores) doesn’t seem like the type of upgrade I would expect from switching nodes. Hopefully next year they can do more with the improved N3 nodes. I’m also getting the feeling that Apple is trying to deploy more complex transformer models on their devices which is why we are seeing such a focus on the NPU.
I think you hit on the main point which is that nobody will pour money into developing for android. Apple also has the ability to make deals with companies with Capcom and Ubisoft to ensure games come to their platforms. I can’t see Google doing this since they already “tried” and failed to have a AAA mobile gaming platform with stadia. The only other company with enough motivation and money to bring big games to android is Samsung, but their mobile chips aren’t doing too well (despite their RDNA 2 architecture making it easier to port games).
Unfortunately, Valve would also have to build a CPU translation layer (Like Rosetta 2) since games run on x86 architectures and snapdragon uses an ARM architecture. The steam deck uses a Zen 2 CPU architecture which is already x86 so there would be little motivation on their part to do this. Currently proton uses wine to convert windows api calls into linux calls. The big thing Proton does is allowing games that use DirectX to run on Vulkan which is natively supported in Linux. So unless Valve makes the Steam Deck 2 with ARM or another company decides to make an x86 to ARM translation layer, then I don’t see something like Proton coming to android any time soon.