What is better on gas 2-stroke or 4-stroke?

I'm curious to know, when it comes to gasoline consumption, which engine type is more efficient: the 2-stroke or the 4-stroke? Both engines have their unique characteristics, but which one offers a better bang for the buck in terms of fuel economy? Given the current rise in fuel prices, understanding the efficiency differences between these two engine configurations could be crucial for both personal and commercial vehicles. I'd appreciate it if you could elaborate on the advantages and disadvantages of each, and provide a concise comparison in terms of fuel consumption and overall performance.