Because of the amazing macro tool in 2k2UM, it is actually very possible to get framedata from 2k2UM in a very accurate way. Sadly it's also a LOT of work.
If there'd be some way to extract the hitbox data from 2k2UM, everything would become a lot easier. If that'd be possible, I would be totally up for also making a site with 2k2UM data. But as long as we can't view the hitboxes, it's much too time consuming.