I agree, in part. I think you overstate the evenness of regime vs. opposition in both cases.
In Syria particularly, there is a disconnect between notions of modernity and the medieval crackdown by Assad that isn't just a religious affiliation issue. Major protests have occurred throughout the country, even in traditional areas of support for the regime.
Yes, you're right. I underestimated this factor.
Naturally, but there always been a division between Tripolitania and Cyrenaica. Gaddafi never been as strong in Cyrenaica, which was a main base for Sannusi monarchy before 1969.
Well, after all, Libya was created, like many post-colonial countries in Africa, with little regard to an actual historical and social ties.
Gaddafi basically had over 40 years to build a country where everything was resolving around him. In 1969, all he need to take power was a group of junior officers to take over army HQ and radio station. Assad, meanwhile, inherited a very strong powerbase created by his father. It didn't save them from current troubles, but difference is clear.
So yes, in comparison, powers of Ben Ali and Mubarak were weak. It took hours before Ben Ali lost all control. Mubarak held longer, but only because army was reluctant to just kick his ass openly.