Fairly sure the UFC recognize that Ishihara could be a legit prospect from Japan with a marketable personality. He's young, has lotsof high level experience for his age, a good record and is more or less a walking performance bonus waiting to happen. Dude might get one or two more flashy KO's and a good match up against someone ranked as a Co-main on some Asian card and sell a fair few tickets.
Artem on the other hand is a lot of things, but exciting is not one of them. At best he puts on fun fights against low level guys on some for a crappy fight card in Europe. Dude is 30 y/o, 0.5 record and has no really good skills except that he's tough as nails and likes to bang. He is, quite simply, a decent filler who'll put on decent fights for the most part and I think they use him as a fairly safe way for exciting prospects to get a decent win or two.
That said I'm not dumping a lot of money on Ishi as a big favorite, he's not a complete fighter yet.
Artem on the other hand is a lot of things, but exciting is not one of them. At best he puts on fun fights against low level guys on some for a crappy fight card in Europe. Dude is 30 y/o, 0.5 record and has no really good skills except that he's tough as nails and likes to bang. He is, quite simply, a decent filler who'll put on decent fights for the most part and I think they use him as a fairly safe way for exciting prospects to get a decent win or two.
That said I'm not dumping a lot of money on Ishi as a big favorite, he's not a complete fighter yet.