I’ve not ridden the Boardman so only going off the spec sheet. The Boardman is a lot lighter and the components look great for the price. The frame geometry is slightly more XC-oriented, but I’m not sure how much difference it makes. MBR review mentions this as the only real downside to the bike, but still loved it
I can only speak for the Bizango (think the Bokor is the same frame) but it’s been brilliant as a new rider, and I’ve felt comfortable riding it over much more technical terrain than I would have attempted a year ago. It is on the heavy side but I have another bike I prefer for mixed road/off-road rides, and I mainly take it to trail centres or messing around in the woods.
If I only had one I might be inclined towards the Boardman, but it depends how and where you’re planning to ride. I don’t think you’d be disappointed with either.