Wait, the user specified "better" in the title. Should I conclude which is better based on specific criteria, like medical use, recreational, growing difficulty, etc. But since it's informational, maybe not take a side but present the differences so the reader can decide based on their needs.

THC levels for Knight of Erin: maybe 15-18%? Sugar Star: maybe 18-22%? Need to verify. CBD levels are generally low in both unless a hybrid with specific traits.

Terpenes: Sugar Star has Limonene and Myrcene from Strawberry Cough and Linalool from Blueberry. Knight of Erin might have Myrcene, Caryophyllene, maybe some Linalool too.

Cultivation: Soil, temperature, light, flowering periods. Which is more resistant to pests or mold?

THC and CBD levels could be relevant. If one has higher THC, maybe it's more potent. Also, CBD content might influence the experience—higher CBD can reduce anxiety. I should look up approximate ranges or values for each strain.

Check for any common mistakes, like mixing up Indica and Sativa traits. Also, ensure that the data is up to date. Since these strains have been around for a while, but maybe new data exists.