Not only would the 4770k be stronger and use less power in terms of the main CPU, but the graphics are stronger and use less power at idle due to the lower base frequency. Those base frequencies are not what it will be getting work done at, but a means of conserving energy when not under load.
The base frequency of the i7 (not i5) 4770k's graphics may be 350 MHz but it's top frequency is 1250 MHz, compared to a top frequency of 1150 for the i5 3570k.
Neither graphics choice here would be suitable for very high quality gaming. These are considered to be, "good enough," options, but when a discrete add-in graphics board can be used, the difference in performance is very substantial.