People not knowing how the fight will play out is precisely why people want to see Jones vs Aspinall are you kidding me? Well, beyond it being the obvious fight that should be made if the UFC wants to be taken seriously as a sport. The champ should ALWAYS unify against the interim champ over any other fights that could be made.
Tom has a skill set that has historically given Jon a bunch of problems. Big dude that matches Jon's size, much faster hand and foot speed than him with good clean boxing. Has a lot of the qualities that Gus and Reyes had success with but is much better and much more dangerous than both.
Jon has the wrestling and the fight IQ to make it very interesting for Aspinall in areas he isn't battle tested in.
However, this argument rings hollow when the alternative that Jones and his fanbase wants to see is Alex Pereira.
While still a bit of an unknown, Aspinall's takedown defense percentage is 100% in the UFC. He has spent the least amount of time on his back out of the entire roster at <1 second, and that was when he slipped and fell on to his back against Volkov.
Meanwhile, Pereira has been taken down by every single opponent in the UFC that has attempted to do so, including Jan Blachowicz, Jiri Prochaza and Israel Adesanya. When pure strikers are taking and holding him down, Jones is going to do whatever he wants to him in the grappling realm.
So if anybody wants to make the argument that Aspinall's wrestling is unproven and so he shouldn't get to fight Jones, they better make damn sure they aren't advocating for the Alex Pereira fight instead.