Originally Posted by
DjRocket
Of course $750, but your logic assumes "all things being equal", which they are not. I don't have the Hyatt card, per your example, and I can't get it since I'm over 5/24. To make this 3x Marriott cost/benefit unreasonable for me, you would need to compare the deal to the alternatives available to me : ). Besides, I'd rather have $100 worth of Marriott points than $100 worth of Hyatt due to its locations, again a highly ymmv factor.
I think your YMMV is more of an argument than fact. It is like someone can only have Citi card, or only Chase card and are banned with other banks. Or for MS, someone can only do MO since they are banned with Paypal, Serve/BB and more restrictions.
Facts are just facts. Your YMMV won't change the facts, but just your own.