Wittgenstein is generally considered to be one of most important philosophers of the 20th century, if not the most important. Analytic philosophy has largely lost interest in Russell's works (Kripke was far more important and is generally considered the person who "cleaned" a lot of Russell's deadend projects), while analytic and "continental" philosophy still avidly discuss Wittgenstein's Philosophical Investigations, and the fallouts from that work were a profound reassessment and shake up of philosophy. Russell is probably more well known nowadays as a popularizer of certain ideas in philosophy, as a general interest and political writer, and as a philosopher that typified the particular era in which he wrote, and less so for the actual philosophical ideas he sought to argue for. His History of Western Philosophy book for instance is quite famously bad.
Most people today would question if Russell should be put in the same sentence as Wittgenstein.
Not based on the Tractatus, however. Which had it's moment but it contains some of the greatest boners ever written. The confusion of probability with simple logic trees is beyond hilarious from a modern perspective.
Don’t worry, the reassessment which happened to Russell will undoubtedly befell Wittgenstein when the time has come. Both worked on the fairly uninteresting part of philosophy anyway.
Most people today would question if Russell should be put in the same sentence as Wittgenstein.