They're just as nice looking (when new) but the problem is they don't wear like Sambar, nor do they resist shrinkage/warpage/age as well.
Besides the outer bark-for looks, and size, stag is typically graded by quality.
Better pieces have less Pith (the soft, foamy looking junk on the inside that doesn't ever really stabilize properly.)
Sambar is naturally less pithy and more resistant to..everything than any other type of stag. That's what makes it so desirable as a handle material vs other antler and horn materials.
Yeah, sambar is OK I guess...
The absolutely crushing thing about that sambar export ban is that it came about because knuckleheads were shooting the sambar to get their horns...they they shed.