Gotta say, I'm scratching my head at the notion Hilton has better breakfast options at full service US properties. Because there are quite a few that just give you a voucher that doesn't come close to covering a real breakfast.
Hyatt still has the best breakfast benefit. IME, Hilton, Marriott, and SPG are basically the same for US properties - you may get a lounge breakfast, you may get a full restaurant breakfast, or you may get something less than that.