Considering impulse is based from strike and destiny is based off impulse... it is quite plausible that kira skills in destiny will outshine than his current suits after strike.
I'm also thinking that Kira would surpass his current self on Destiny if he was given..the Destiny itself. Just think of it, all of the toys he had using Strike, and that Godly speed of the Freedom.
Nps I also find that *majority* of kira fans in my RL tend to use freedom or Strikefreedom as a base to their examples or arguments. It just shows how popular those 2 Gundams are that clearly overshadows the strike for some reason.