Considering the findings in the article about i3 for games, I think the emphasis on "gaming" needs to be dropped from this comparison. Unless results from specific CPU-dependent titles can be cited, it was clear that all modern CPUs are sufficiently powerful that which one you choose doesn't matter much. The question becomes, will the bottom recommended chip, the Regor 245, handle modern games at typical resolutions (e.g. 1680x1050) with ANY GPU?
I think it would be useful to see the GAMES on the tiers, with the minimum CPU needed to play them well.
In the meantime, it looks like it will take productivity apps, not games, to distinguish a difference between a machine running an Intel i7 and one running an Athlon X3.