The fact that Beartic is a stage 1 makes him the supreme victor in your little comparison. Krookorok also is weak to key pokemon such as Blastoise, Kingdra Prime and Beartic, whereas as Beartic only struggles against Scizor and Steelix. In addition to this, Krookorok doesn't hit both Reshiram and Donphan for weakness, like his ice-type brother. With the release of Beartic, pokemon like Donphan, and Krookorok for that matter, will see harshly reduced play. it is the ultimate counter ro Reshiboar and Donphan, making it top tier without any doubt.