We do not attacking other browsers, we explain the difference between those browsers and Vivaldi. And, again, we do it gently, not aggressive.
"A bit slower"... I can't agree. Browser is not an autonomous software that works without human action. If we talk about browser speed - we should understand that this speed calculated from speed of software itself plus speed of user's working with browser. Vivaldi use a Chromium core, thus the pages loading and rendering speed is very close to Chrome and other Chromium-based browsers.
Then, we have our own interface. In some cases this UI works a bit slower than native UI (but we always working for optimisation and, for example, Vivaldi 3.7 got a real speed up of new tab creating, window opening, etc.), but we have a unique set of built in options and features that dramatically speed up the most of popular actions - I mean hotkeys, mouse gestures, quick commands, spatial navigation, context menus adjusting, etc. Plus sessions, Speed Dials, Web-Panels, tabs grouping, tabs tiling - and many, many other powerful features and options. And these features allow users to work with incredible speed - even UI can't neutralize these advantages.
That's why Vivaldi is the fastest browser. I even not believe - I just know that. If it were not so - I would not say "Vivaldi is faster". I work in Vivaldi every day up to 14-16 hours and using any other browsers for me is a real pain. They works slow, have no powerful features and need dramatically more clicks and mouse moves than Vivaldi - that's mean a slow work in these browsers.
But again, thanks for your suggestions. We are a really small team and we trying to do the best, thus your feedback is important for us. We will discuss your suggestions in the team.
