Hmm.. too complicated for plebs like me. Anyway I wasn't too disappointed. I never had the expectation of getting upgraded considering that there were no F seats at booking but nevertheless as it got close to OLCI i did get my hopes high.
I was on a W fare- so not the really expensive bucket.
However a unicorn- I got CPU'ed on my flight this coming Sunday night! Hasn't happened to me in 4 months of travel-Had more CPU as plat last year during the same period of travel