Another way of going about this isn’t so much buffing Cunning creatures but bringing their opposition in-line to them. The trifecta of Cleanse and Debuff attacks between the three isn’t exactly equal.
Cunning Strike: Cleanses bleed, while debuffing damage output
Fierce Strike: Cleanses vulnerable, while destroying shields and ignoring armour
Resilient Strike: Cleanses distraction, while crippling speed and removing dodge/cloak
The problem here is that Resilient moves remove everything that Cunnings need to survive in one go, and because of how vital speed is coupled with the generally-low health pool of Cunnings, it’s mostly a given that its Poukaidei is cooked. Compare Fierce moves to Resilient creatures: Fierce attacks can remove shields and armour which are staples of many Resilients, but health pools of Resilients are high enough that it tends to require at least two such attacks to fell them, and as Resilients frequently slow their opposition down, those two attacks don’t often hit in in succession like they do on Cunnings. A Cunning creature hit by a Resilient attack loses any advantage it had by Distraction, taking full damage on an already-low hitpoint pool, and then becomes a sitting Kelenken for whatever the next attack is - usually a much more powerful one.
There are 55 creatures with Resilient Strike (to say nothing of Resilient Impact & Rampage), along with an additional 6 that use Superiority Strike which does essentially the same thing. That’s a huge number of creatures out there with the potential to reduce the various Cunning creatures to free hits.
Unless that Cunning has an instant move or an immunity to speed reductions (because let’s face it, anything less than 100% speed reduction resistance on a creature that doesn’t also reduce its opponent speed is functionally useless).
Now, I’m not saying Resilient Strike needs to go; I’m saying it just does too much. To put it in line with with the other two main attacks, it should remove an advantage to the same degree - but removing both the reduction in damage (whether Distraction-like or Evasion-like) AND the speed, it’s all but guaranteeing a dead Cunning. That kind of guarantee is just a bit too much.
Either the Distraction cleanse should be removed, or the Speed reduction should be removed, and since the reduction in speed is much more powerful to keep the rock-paper-scissors thing going for them and we don’t want to nerf Resilients against Fierce (especially the fast ones), I vote the Distraction cleanse ought to go. Superiority attacks can remain as the Distraction-clearing specialty attack on far fewer creatures, allowing the Cunnings to reclaim a little more market share, though not become overpowered.