No, the correct thing to do is to publish multiple columns showing performance under the different compilers. Large co do use the specific compiler that will give them better performance. I know many big software compiled with ICC. Then, there is the lack of tlak about MSVC. That's one standard compiler used extensively.

In benchmarking you have two choices: publish the real numbers or not. Which option you choose marks you as honest or not.

You can argue about why the numbers for your product are lower in the discussion section of your report. Not in an asterisk.