Its an ipad air against the 12.9 pro. But the end result should be pretty much the same.This video shows more an extreme test where 2GB RAM can limit (due to having less memory to store previously-opened Safari pages) the 9.7" iPad Pro versus the 4GB RAM in the 12.9" iPad Pro. I've also seen another video that shows the same issue with many opened applications. Not a major issue, but still a limitation. I am hoping the 10.5 will come with 4GB.