The verdict
For a small B2B team selling to identifiable roles, I'd pick LinkedIn Ads. A complex or high-ticket product aimed at an older buyer is a poor fit for TikTok, and you would pay for views that never become pipeline. If you sell to consumers, run an online shop or a direct-to-consumer brand, and you can produce native-style video without a studio, pick TikTok Ads. Treat it as an experiment with a fixed budget and a clear stop rule. Judge it on cost per customer, not on views.