Any reference for this statement of yours?
Hareem sis.
Read the details on Hudaibia. No one signs a humiliating (according to Umar rah) treaty unless they are threatened with dire consequences.
I realize why you asked that question. You feel that Muslims were super strong back then and there is no way Hudaibia could have been signed from a weak position.
The reality was quite different.
FYI. Every step of early Islam was on defensive footing. Hijrat to Madina in the middle of night was under total fear and extreme care. Hijrat to Habshah (Ethiopia) was under total fear. There were many such moments in early Islam when things were precariously close to utter destruction.
Let me give you an example from modern day to show how bad the uncouth tribals could be.
You see Taliban bombing girls schools in Swat?
Multiply this tribal ferocity by 100 times to picture the Quraish of Makkah.
Just think about the Hinda mutilating the bodies of shuhada after Uhad. She tore the heart out of dead body (bodies) and chewed organ(s) before spitting out in the rage and ultimate hatred.
Just think about broken teeth of prophet immediately after Uhad and you will realize the amount of hatred and zeal carried by the tribal animosity of Makkans. Can you even imagine what would have happened if that stone or projectile had hit a few inches above? Surely we believe in "Jisay allah rukhay usay koan chukhay", but view this from the eyes of Muslims who were in that day filled with blood and dead bodies. They were definitely scared especially when the undisciplined Muslim fighters posted on Uhad forgot about their duty and left their position.
Or just go visit the Badr cemetery to see the 72 precious bodies lying there to realize how close was the utter destruction of Muslims.
The problem with Muslim these days is that we glorify our wars without looking at the realities that existed back then. We think it was easy to spread Islam by shear power. It wasn't so. There were a lot of "oops" moments, when things could have gone either way.
Muslim back then were even as vulnerable to the competing powers as they are today. They were all ordinary mortal human beings just like today. They were too dependent on divine help just like today.
The difference is that in early period Muslims used finesse and non-violence first and power was used only as a last resort.
These days Muslims think, we carry sword and jump on our opponent and Allah will give us automatic victory. Certainly not.
Muslims like any other group must use their head and very carefully decide their options and the first and foremost option is to avoid war and bloodshed at any cost.