What makes Tuchel a level above Lyon or Everton who are big clubs in good league positions (current Everton position not withstanding)? Tuchel managed Dortmund, which is not a European giant at the moment, and he has only won a German cup during his tenure. Basically, he has done feck all so far to warrant a claim to managing the top 6 of the premier league (well, Liverpool maybe!), or the top 2 of the La Liga, or even Bayern.
I'd put him in the same bracket as Emery, and the latter atleast is a multiple EL winner. It's true Emery is in a more high profile job at PSG, but at that time, circumstances favored him as no-one else was available for them to appoint. Else, Emery would have ended up at Everton or a similar club.