Yup. Look at the NFL players who will randomly throw a messy tumbling skill (like a RO tuck) in the end zone after scoring a touchdown. I even saw one of them do a full. They don't have any tumbling training, they're just athletically gifted men chucking themselves in the air. Girls are built completely differently and would never be able to just fling themselves into a standing tuck on grass without ever having done it before. While I've seen some boys who are weak tumblers and never progress past a handspring, overall it tends to be easier for them than girls.