Both links were through "my special offers" page on amex. I was wondering why as well, I have multiple chase cards that I have been running all of my expenses through, maybe they want to get into my rotation. I've noticed them softing my credit report 2 or 3 times a month for the last few months. I currently do not have an amex card as I was holding out for a 75k or 100k offer, missed out on last years offers. My other theory is just dumb luck. I'm leaning towards the latter.
The terms on the PRG 75k after 1k spend. The Delta terms are 25k after first spend, 50k after 10k spend in 6 months, no annual fee first year, then 2.5k for an additional user. I got offered a 52.5k Delta last month, didn't take the offer obviously.