Now, im not even japanese,but i know agnome is AZELF !!! =3 Its all in the name agnome = Gnome = Elf, hence Azelf, how can you not recognize teh Azelf, gtfo off my thread noaw!! =P lol J/K
Anyways, I get where Shedinjask is coming from. Azelf does seem broke on paper, nasty Plot, 125 base att and sp.att, gets explosion to beat sp.walls, awesome movepool, but in reality is it ?, i know better than anyone, it cant switch in for ass, gets lol'd at by status, and dies to pursuit, Chomp is kinda the opposite, it doesnt seem broke on paper, but if you take a look at it in depth, no definitive counter, the ability to beat all of its "counters" and a stupid ability, topped off by stats that can survive Ice Beams and Swords dance, base 102 speed and much much more, yeah. In early D/P people were not abusing BP, Sandveil sets OR CB sets, hence it never getting tested or even considered for ubers, but the recent abuse of it has let it be seen in a different light.
Also, Just because a "Normal" poke has never been uber before apart from wobby, people arnt used to it happening, hence why some people are skeptical of it, even if it is a normal poke, its still can be too broken for OU