Yes, because the Empire without Morrowind (destroyed), Valenwood (sided with the Thalmor), Elsweyr (same), Black Marsh (became independent), Hammerfell (the Empire dropped them), the Summerset Isles (obvious reasons) and Skyrim is SOOO much of an amazing force, that I understand the Stormcloaks are nothing compared to them...riiiight.
Yes when u look at the thalmor influence and imperial influence in other provences it seems that the storm cloaks do not stand a chance, BUT the stormcloaks live for battle, and embrace their death as they go to sovenguard.
I compare the stormcloaks to the Spartans in the movie " 300". 300 Spartans can take down thousands of soldiers as the Spartans are true soldiers and have no fear.
This in many ways is the same as the nords of skyrim. They are fierce, they are battle born (taught to fight as a child) and they are fearless and embrace sovenguard. I honestly think 100 stormcloaks could easily take 300 - 500 thalmor or imperials.
Not to mention the fact if the dragonborn doesnt get involved, the stormcloaks are the only side with the power of the voice. And if the grey beards decided to step in, they would back ulfric without a doubt, there for making the stormcloaks even stronger.
I need more knowledge on this topic, I'm going book hunting now lol