Its not a mystery. 1 tier credit is equal to 1 reward credit. So unless it's a multiplier day 1000tcs equals 1000 rcs. I'm on the plane now departing so I can't show you the info that explains this. So when I land in about an hour or so I'll post it. UT as an experienxed CET RC earner I've learned the ins and outs... By annoying the hell out of the TR Desk.