haha!.. I have no idea why, but yes he ate dates in odds and doing wudhu in odds..

edit:.. later, I asked a few of my more religious friends about this.. you got me curious.. And most just said... prophet Mohammed got most his direction about everything from Allah.. there was a purpose for everything.. .. then again.. maybe he just ate 3... sometimes people back then knit picked every single thing the prophet did.. and thought they had to copy every exact movement to the dot.. Which wasnt what he intended us to do.. We shouldnt follow around like monkeys.. (sorry).. but for example.. What if the prophet had a twisted ankle and walked with a limp that day.. and someone yelled "Oh the prophet walks this way, we should all walk this way".. See what I mean.. sometimes things just dont need to be explained.. if eating 3 dates or 2, or 5 or 6 isnt any difference health wise. then dont worry about it.. Im sure we are not to be gluttons while eating, but yet we need enough to supply a substancial amount of nutrients to our bodies.. and dates are excellent in vitamins and minerals. but still they have high sugar.. so possible 3 is just perfect in vitamin, mineral and sugar content... Allah knows!