Define "comparable".
Is it a 1:1? Of course not...but I'd imagine there are many comparable qualities to it, especially if using higher end hardware (DD wheels, pedals of similar feel to real world counterpart and something that gives a very high FOV like VR or triple monitor/surround projection). It also has the added bonus of exposing our still very niche hobby to a bigger audience. We clearly still have this divide in our community between those that aren't happy that some of us take it too seriously vs. those who think some of us don't take it serious enough. I don't know if merging the two worlds will ever help with this, but one huge benefit I see is getting feedback from ALL drivers of a specific series on how a sim feels. This has never happened before (normally you get drivers from all over...a Nicky Thiim here, a David Perel there) and I can see that as a really good thing; their feedback will hopefully push Kunos and other developers to higher levels or realism in the future. 1 or 2 drivers' opinion is one thing...the entire field giving a majority opinion is something else entirely.
I'm also glad to see that they will be on-site events with the same hardware, as my primary concern had to do with possible hacking or using an alien esports substitute to drive. Hopefully all involved manages to make it a glitch-free experience.