It depends what you use your aircraft for, but yes, the EVO camera has the potential to be better than your P3A.
It has the same field of view and aperture (f2.8) but it offers 4K video and 100mbps data rate.
If you shoot mainly still photos then the improvements will not matter that much to you, but for video the EVO specs are clearly ahead of your P3A.
As ever though the actual performance in the air will be the determining factor, no matter how good the camera is it still needs a stable platform to operate from and nobody really knows yet how good the EVO is going to be in that regard...