The reason Qi did not come up to Lu was that Tai-gong was inferior in worth to Bo Qin. Tai-gong and Bo Qin were both given fiefs, and each went out to his respective state.
伯禽與太公俱受封而各之國，三年，太公來朝，周公問曰：「何治之疾也？」
Eric Henry
After three years, Tai-gong came to report to the court, and the Duke of Zhou said to him, “Why have you been in such a hurry to put your state in order?