Until you are #1 fighter of your division you probably aren't dominating anybody of importance yet, now are you? Think about it for a second.
You can be awesome, but if you're out there beating Khamiz Mamedov nobody gives a shit and you shouldn't receive equal praise as somebody that's beating top tier fighters.
Khabib and Tony have barely fought any top tier contender fighters as of this moment. And I'll illustrate that with UFC rankings below:
Khabib has 3 top 5 victories in RDA (#5), Barboza (#4), and Conor (#2) and 2 top 10 victories in Healy (#10) and Johnson (#6).
Ferguson has 2 top 5 victories in RDA (#2) and Cerrone (#4) and 4 top 10 victories in Lee (#7), Barboza (#6), Thompson (#9), and Pettis (#8)
Neither Khabib or Tony have defeated the level of competition other LW fighters have yet. The above are UFC rankings. They're telling you this themselves with their own rankings.