Q. Which is better in off road RE Himalayan Or KTM Adventure 390?

Both are great off road but the ktm is little bit biased towards the road. Depends on where you plan to spend most of your ride on. On highways the ktm would be more than happy to cruse on triple digit speeds but off road the sudden and robust response of torque from the royal enfield 411cc long Stoke engine is something else , but it does not performe as good as the ktm on the highway.

See RE Himalayan have a good shockers n feels comfortable in off road patch while KTM 390 have stiff suspension but quality wise KTM is best

Re himalayan,bcz if you see the wheel then understood alloy wheel is very risky for off road.it can break or bend