The pictures tell only half the story.
You don't say if you did a plug chop, if they were removed after the engine had idled and if so had it been idling for the same length of time - all factors that can affect the plugs appearance.
It's difficult to tell from the photo but assuming that all you did was change the ICU then any difference would be down to that.
Bottom line is how does the bike feel i.e. better, worse, performing differently and if so in what way, at what revs, accelerating, steady throttle or overrun?
Attached is some info that may help you.