me: 1 activity for 2,500 miles
mrs. iapetus: 2 activities for 6,600 miles
I'll hit mine ... by happenstance; this certainly isn't an offer that would motivate me to make a trip specifically to qualify. mrs. iapetus won't hit hers (GM 'til I hit 1 MM in April or May), but I would have (again, it just happened this way).
Like others, I'm fascinated by the variability of the offers being made.