the best part for the A10 (apart from encryption, which is much better because the lack of the instructions on the i3) is on rendering, but overall the difference is quite small, the i3 is faster on winrar, the A10 on 7zip, now when it comes to gaming, it's close on a few, but the i3 opens a significant gap in others (the same games show the fx 4300 significantly ahead the A10, probably the lack of l3 cache is hurting), overall I see the i3 3220 winning, when you consider it's almost half the TDP, it gets even better, but that was not the point,
"crushes" make no sense, the 750K is a hard to find (for a decent price, it's not only in the USA) CPU in many places (which is a shame, considering it's clearly a great CPU for what it was supposedly to be sold for, the same goes for the 740), and without a good overclock it's simply slower,
I think the i3 is overpriced at the moment, if the 750K could be found for $80 it would be the clear winner (as long as it doesn't need additional cooling and a more expensive MB), but it's not always better, Intel have a clear lead in some cases because of the high IPC, and power usage is always lower.