I would think its not directly comparable. Its kind of like comparing USD to the Yen. Both numbers are vastly different but end up equaling the same amount. Maxwell per cluster of cuda cores has been optimized more so then Kepler. Maxwell also has full support for dx12 and supports Nvidias new AA methods. I'd go with Maxwell anyway for the sake of hopefully curbing the upgrade bug for a longer period of time. The cards use less power, make less heat, Do less wear on the soldering and vrm and are less likely to fight with your air conditioner. With my 280x I swear my rooms always 20 degrees hotter.
With all that said, the EVGA card has NO vrm heatsink attached and is dependent on the fans to cool it. I'm sure this is 100% fine but it really does concern me much like how 95c on a 290x would concern me. I'd go with the Asus strixx version. The card is beautiful even without the cooler, its clean, has less components popping out everywhere and its really well designed. It would be my first choice.