Could you please check this out
Marvel Comics: Minor Hulks Addition
Rage Power is not only an ability for Hulk, all Hulks can do the same, so: Red She Hulk Varies up to Planet level, far higher with Rage Power Skaar Varies from 3-C up to High 3-A, higher with the Old Power, far higher with Rage Power, even higher with Rage Power and Old Power Like father...
vsbattles.com
If that paragraph is all there is then it wouldn't mean much on its own for tiering or range.