There are different religions and ethnicities in Syria, and only one religion and ethnicity in Somalia. Syria had 2 major powers backing them(Iran and Russia). Also there were no terrorists in Somalia, unlike in Syria.
That makes him look worse. Assad is a Shia minority that's why it was easy to rally cry majority Sunni against him. Homogeneous people like Somalis are supposed to have better conflict resolution process. Especially when the state monopolized media and public relations in 80s era were there was no smart phones or social media.
He legit riled everyone up including the very city he resides in that's like Ali Saleh declaring his support for Saudi while staying inside Houthi controlled territory. He got shot the next day.
Barre had American, Italian & Gulf states support for much of the 80s and still lost control of most of the country by 1990.
Assad had radicals flocking to Syria from all walks of life with generous support from Turkey, Jordan & Qatar. Rag tag Somali rebels had support of Ethiopia and Libya.
There is no comparison between the two. Syria was far more difficult and treacherous to navigate. Somalia was a straight up buffoonery.