The Mahindra is Made by TYM(at least the ones I looked at recently), they just use their own engine. The TYM offered more standard options and are less expensive to purchase.
I own Kubota and TYM, both have things I dislike. When I was looking for a bigger tractor, the TYM had much more to offer as standard options than Kubota and almost 10 grand cheaper. So far the TYM has been a great tractor with no issues, the
BX24 is a little mule, it has done everything I've asked of it. So is Korean on par with Japanese I'd have to say yes.