The earn rate is easily found on the website of each chain, the SPG comparison is hopelessly out of date and innacurate:
Hilton
HHonors Points and Variable Miles
Earn 10 HHonors Base points + 1 airline mile per eligible U.S. dollar spent*
HHonors Points and Fixed Miles
Earn 10 HHonors Base points per eligible U.S. dollar spent + 500 miles per stay (100 miles per stay at Hampton Inn, Hampton Inn & Suites, and Homewood Suites by Hilton.)
HHonors Points and HHonors Points
Earn 10 HHonors Base points + 5 bonus points per eligible U.S. dollar spent
Gold :
Earn 1,000 Hilton HHonors® bonus points per stay.
A great way to maximize your points earnings.
SPG
2 base Starpoints for each U.S. dollar or equivalent of all Eligible Charges .
Gold & Plat
Earn Free Night Awards faster. Increase your rewards to 3 Starpoints for every eligible U.S. dollar spent -- a 50% bonus over Preferred Guests.
Priority Club
Earn 10 Priority Club® points for every $1 USD (or local currency equivalent) spent on eligible charges*, or earn miles from one of our airline partners. Miles earned
vary by airline.
At Staybridge Suites® and Candlewood Suites®, members will earn 5 points for every $1 USD (or local currency equivalent) spent on eligible charges*, or earn miles from one of our airline partners. Miles earned
vary by airline.
At InterContinental® Hotels & Resorts, earn 2,000 Priority Club® points or earn airline miles, which
vary by airline, per stay at qualifying room rates**.
Gold is 10% more, Platinum is 50% more