That's on 32bit instruction sets like SSE3. The X86 license is owned by Intel and AMD pays them to use it. AMD's historical IPC deficit to Intel until Ryzen 3 was as much to do with the compiler as the silicon. That gap has been closed since the most recent generation Ryzen. Intel holds the lead in single thread performance, but everyone that's not gaming has moved to threading where per core performance is not as critical as having enough threads for the work. This would have happened 9 years ago if Bulldozer had been a little closer in performance in release. Now it's bad money to buy Intel in either consumer or enterprise grades. Any leftover single example victories for Intel now are pyrric at best. Intel is just for fanboys and competitive overclockers now.

wait intel owns c++?

While Intel might optimize compilers for their CPUs, AMD has still done a fantastic job at keeping pace and beating Intel's offering overall.