The carbon is a different spec for a start:
30T/40T Modulus Carbon XC Race
24/30T Mitsubishi UD carbon
So what do the numbers actually mean?
In terms of use, in marketing speak..
One is
“An XC – endurance bike that wants to push your performance to the limit in every way possible. The frames geometry is confidence inspiring allowing you to take on the most technical trails and descents. The frame can also be built with enough rear tyre clearance to take a 27.5″ x 2.8″ tyre and allows fitment for a front mech, Di2 gearing and even a dropper seatpost should you want to take the normal boundaries of a carbon endurance bike and kick them into the long grass!”
The other is
“Designed around 29″ wheels and 100-120mm travel forks it’s perfectly suited to smashing out off-road miles all day long. It features a 12 x 148mm Boost dropout system, IS42-IS52 tapered headtube and all cables are internally routed to keep it looking clean with routing for stealth dropper posts as standard. Its Shimano Di2 ready too with a neat battery port hidden in the downtube. It’s a bike that blurs the boundary between XC race machine and aggressive trail bike.”
So that’s completely different?