It's not the age as much as that Jones just isn't a natural HW. He's a LHW with a beer gut. (An all time talent of course, but still not a natural HW).
Anyone who's being honest knows he looked slow vs Stipe. It's just that Stipe looked even slower, stuck in mud.
Jones will have the experience edge for sure. He's a brilliant fight tactician. He's seen it all. But physically he's gonna be at a huge disadvantage. Aspinall is a true HW. Bigger frame by far. And he moves like a WW. He will be bigger and faster.
I agree that Tom likely KO's Jon. And even though he's a natural LHW, Jones is still at 37-38 one of the best HW's on the planet. So no, there shouldn't be "excuses". But there should be context.