Definitely true for Europe. I pretty much live in hotels and so far 100% of my bookings where either cheaper (usually) or the same price (rarely) on the hotel's

Definitely true for Europe. I pretty much live in hotels and so far 100% of my bookings where either cheaper (usually) or the same price (rarely) on the hotel's own webste vs aggregators. Regardless of my "genious discount level 9000" or "save up 10 nights and get 1 free" and all the other "discounts" that you actually paid for indirectly on aggregators. The only place where this didn't hold true for me so far was a hotel in Indonesia, where the price quoted at the hotel desk in person was higher than a certain aggregator. The people at the front desk suggested I'd book online and I did :)