I feel like Ajax has improved with each tournament they've played. When NRG took their one map off of C9 in the last tourney, it was Ajax getting the entry frag on C9's soldier that let them cap the first point. When they were playing on Illios, it was really only Ajax who was killing S4's widow. His ults could be better but I feel like there have been less bad sound barriers recently than in previous matches.
Dummy has felt stagnant on the other hand. I'd be much more willing to see where Ajax plateaus than to trash him because he hasn't been up to snuff yet, the kid is getting better each time they play.