Johnny conga.... sorry but I dont agree with you!
I dont deny that you have ears of experience in conga drums,i paid all the respect for such endurance and love in music.I'm not shure of this groove being rumba abierta,but I'm pretty shure that this is not a tumbao 

 .I didnt ask if it was rumba columbia or guaguanco havanero or matancero,or yambu... that you supose that I dont know.I would like to see a video with your rumba abierta,is possible? 
And this ones? probably they get all wrong
http://youtu.be/xm1NnXL2m9Y  compare the two rithms(mine and Michael de Miranda),they are the same
http://youtu.be/fgKa2HdY8Gs