are you using landing pages to get 25% conv rates on freereg/download gaming? seems pretty high with no form of presell tactic...
My observations too, maybe people don't want competition there, in russian market where I did that it helped in conversions, I didn't seen $0.2 epc's cause of low payouts, but have seen conversion rates close to what discussed in that thread from my landings, especially in download, free reg - maybe (some times it was as high as 50% CR), but it's not easy to make a guy download few gigs after clicking on your ad without presell