If Microsoft claimed that IE was the first browser to offer tabbed browsing, a dedicated search field, etc. - would your reaction be the same? And how is Opera

If Microsoft claimed that IE was the first browser to offer tabbed browsing, a dedicated search field, etc. - would your reaction be the same? And how is Opera inferior to Safari? Opera's market share is lower than Safari's, of course, since it's not bundled with any operating system, but that does not mean it's inferior.