Because of the multiple [words=https://officialhydromaxpump.com/?uid=6&oid=2&affid=98]gaiters[/words]. Different forces = more gain + the [words=https://officialhydromaxpump.com/?uid=6&oid=2&affid=98]gaiters[/words] 75-80 and soon the [words=http://www.mattersofsize.com/join-now.html]MOS[/words] getter are stronger then BathmateH.
Because there is no fluid retention with [words=https://officialhydromaxpump.com/?uid=6&oid=2&affid=98]penomet[/words]... with [words=https://officialhydromaxpump.com/?uid=6&oid=2&affid=98 ]
Bathmate[/words], there's a shit lot of Fluid retention.
The valve system if much better, the expansion is better since no fluid retention and it gives less discoloration than the BathmateH.
Much easier to clean than a [words=https://officialhydromaxpump.com/?uid=6&oid=2&affid=98 ]
Bathmate[/words] since you can take off the [words=https://officialhydromaxpump.com/?uid=6&oid=2&affid=98]gaiters[/words].
It's not the same company but I think it is distributed by the same company... [words=https://officialhydromaxpump.com/?uid=6&oid=2&affid=98]Penomet[/words] could help you on that.
Oh.. and where I got theses numbers... well i have one so I just measured it!
You should go on the [words=https://officialhydromaxpump.com/?uid=6&oid=2&affid=98]penomet[/words] area of the forum, plenty of infos outhere!