The weight of the Surface Pro and the iPad Pro 12.9 varies depending on the model and configuration. However, in general, the Surface Pro is slightly heavier than the iPad Pro 12.9.
For example, the Surface Pro 7 weighs between 1.70 and 1.74 pounds (depending on the configuration), while the iPad Pro 12.9 (2021) weighs 1.50 pounds. However, it's worth noting that the difference in weight between the two devices is not significant, and both are considered lightweight and portable for their size.
It's also worth mentioning that weight isn't the only factor to consider when comparing the Surface Pro and the iPad Pro 12.9. Other factors, such as performance, operating system, and app ecosystem, may also play a role in your decision-making process depending on your needs and preferences