M4 is about 12.7% faster than M3 in gaming. Unfortunately, that doesn't move the needle much for base model gaming.
"Testing conducted by Apple August through October 2024 using preproduction 14-inch MacBook Pro systems with Apple M4, 10-core CPU, 10-core GPU, and 32GB of RAM, production 14-inch MacBook Pro systems with Apple M3, 8-core CPU, 10-core GPU, and 24GB of RAM, production 13-inch MacBook Pro systems with Apple M1, 8-core CPU, 8-core GPU, and 16GB of RAM, and production 1.7GHz quad-core Intel Core i7-based 13-inch MacBook Pro systems with Intel Iris Plus Graphics 645 and 16GB of RAM, all configured with 2TB SSD. Prerelease World of Warcraft: The War Within v11.0.5.56695 tested at 2217x1440 resolution on 14-inch systems, and 2048x1280 resolution on 13-inch systems, with graphics slider set to 4. Performance tests are conducted using specific computer systems and reflect the approximate performance of MacBook Pro."