Salmond is a moderate and pragmatist politically. He built up the political popularity of the SNP so they became the dominant party. He very nearly delivered on independence. We can never know for sure but I think he’d have been less likely to tie himself to GI when he realised it only really interested a few fanatics and would be out of step with the rest of the population.
Sturgeon was much more of a progressive idealist, hence she tied herself tightly to gender ideology. But she’s delivered on fuck all, maybe this is why she put such store in getting GRA through and that was something the people of Scotland did not want.
Her only real success was excellent marketing of herself. But her main legacy seems to have been slowly squandering the political popularity the SNP gained during the independence referendum and after Brexit.
Overall, I think Alex Salmond was a more successful politician than NS.