I was actually wondering if Pheromosa's and Kartana's catch rates were typos, since their counterparts have catch rates of 25.I'm looking through the catch rates ( http://pastebin.com/VFP65iRS )
And why on earth are Pheromosa & Kartana base 255
that's comically high for a post game not-legendary. I think it's the highest it can be, as high as rattata. You could conceivably catch these things with a few pokeballs at full health!
meanwhile, dhelmise is 25.