I too agree, Vortex has better aesthetics, Leupold has better performance.
At long range, glass quality is important. Good glass can see mirage better (for wind calls), easier to identify targets, easier to see bullet trace (if you shoot a magnum cartridge with sporter rifle, you won't be able to spot bullet trace, doesn't matter what scope you have, the recoil is too big)
Depends on how you shoot, you might need to decide on a reticle, I dial elevation and hold windage, so I only need windplex or TMOA reticle. If you don't want to dial, you might need a Horus style reticle.
If Leupold offer the reticle you need, then I would go with Leupold. Get a BUBBLE LEVEL if you are going to shoot long range, 5 degree cant can cause a miss.
Personally, I think other than Razor line, Vortex glass is inferior than Leupold at same price range.