Is reverse dive tuck or pike easier to learn?

It's definitely easier to to a reverse dive tuck, pike takes more strength to pull yourself into the the pike position and get your legs up vertical. Don't worry a reverse dive is probably the hardest dive to learn to do, its really easy to psych yourself out and hard at first to get the feeling of how to do the dive correctly down. It took me the longest to learn a reverse dive, what helped be was doing a lot of jumps looking back but without doing the dive. Also at first i really hipped out my jump to get further from the board and get over the fear hitting,and i really concentrated on really bringing my knees up into my shoulders to help me to spin backwards better. Have you considered learning a reverse flip first? it can actually be easier learn because you have a better sense of where you are in the air and when to kick out, if you can throw a back flip you might want to try a reverse flip if you cant get down the dive.