The Maxabeam should be able to put 1lux on target at 3500m and 0.25lux at 7000m.
The XeVision XV-LX70 should be capable of putting 1lux on target at 1100m or so (calculating from 1.3mil lux)
Has anyone actually measured the lux from the superpower variant i am sure it would be impressive guessing its 3-4mil+ lux.
As others have stated the Maxabeam is the light to have if you need to put light out at those ranges and there is not much that can touch it at those ranges, so if you need it for something like that its a great light and i will also say since owning one that in wide beam mode its perfectly usable and quite impressive with its 3000lumens, i would also love to try the partial filter that they sell at some point which removes the donut hole but reduces maximum throw.
The Maxabeam is certainly impressive and throws so far i had to get my GF to hold it on a mountain top and use a 70mm pair of binoculars to see how far it actually throws lol
The XV-LX70 is going to put way more light out there with a wide cone of light that will probably make it more useful say for search and rescue etc or whatever people that actually have a purpose for owning such lights use them for rather than just for fun
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I also think as its more compact that can be a plus in its favor not that either are small EDC lights
The usual answer on here is buy both haha, but it really depends on what you want to use it for, i now really want a XV-LX70 after watching some of the vids people have done for it although will have to save up
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What are you going to be using the light for if you dont mind me asking ?