Uh, no. You're wrong, buddy. This is pulled directly from the website not cobbled together from different parts of the t&c.

http://hhonors1.hilton.com/en_US/hh/about/diamond.do

HHonors™ Diamond Membership

To Qualify
Hilton HHonors Diamond Elite Membership will be awarded to Members with 28 stays*, 60 nights* or 100,000 Base points earned during any calendar year. A "night" is a night that is part of a "stay," as that term is defined herein. Base points earned will count toward Diamond Elite tier qualification. Bonus points earned on Base points do not count toward Elite tier qualification.

*Eligible Rate stays are stays at all rates except wholesale/tour operator packages, contracted airline crew rates, travel agency discount rates, packages exclusively for Las Vegas Hilton casino player card holders, Team Member Travel rates, Hilton Family Travel Rates, Reward Stays, complimentary or barter rooms, stays on NET Group, Series Group or IT Group rates, contracted Entertainment or Encore rates and stays using airline percent-off award certificates. Stays that are booked via third party websites are not Eligible Stays irrespective of rate paid, for the purpose of earning points, miles or stay credit toward Elite tier status. Stays booked via "opaque" channels where the brand is unknown at the time of purchase are not Eligible Stays for the purpose of earning points, miles or stay credit toward Elite tier status, or the receipt of Elite tier benefits such as upgraded accommodations / amenities or access to health clubs. No point or stay credit, airline frequent flyer mileage credit or credit toward tier status will be awarded for "no show" situations when a member has made a reservation guaranteed with a credit card but then does not check in to the hotel--irrespective of whether or not the member's credit card is charged for any portion of the reserved stay per the hotel's "no show" policy.