so... Akali pressing Q, wait 3 seconds, R, immediate autoattack, QE for an instant ~70% enemy HP burst in one rotation without counterplay apart from flashing away after the first Q, which seems dull, because Akali can even decide whether she goes in or not.
But for the comparison... Akali Q CD: 6 / 5.5 / 5 / 4.5 / 4, Kat Q CD: 10 / 9.5 / 9 / 8.5 / 8, not to mention the damage difference: Akali Q: 80 / 125 / 170 / 215 / 260 (+90% AP), Kat Q: 75 / 115 / 155 / 195 / 235 (+ 60% AP).
Actually I think that Akali's Q should have been nerfed in a different way... It should mark the enemy for 3 seconds, not 6 and the cooldown should be doubled if its not procced instead of not being able to proc it with E.