Those are better than the Shamos you'd get at a hatchery, theyre closer to show standard. I'd say theyre pretty good. I got a shamo from Ideal hatchery, and she's really sweet and pretty, but she doesnt stand up like those guys do.
Those Shamos are better than hatchery quality, but I don't believe they'd win any ribbons if a lot of other Shamos were at the show. They'd be good starting stock if you wanted to work on shaping up a good line.
Shamos are indeed fighting birds, and are prized for their upright stance and large breast. These features would ensure that the other fighting bird would strike at the thick muscled chest, instead of the bird's vulnerable face and eyes. Additionally, the wattles and such are extremely small or non-existant in order to avoid tearing and bleed-out during fighting.
*please note that I am not condoning or supporting bird fighting. I consider it abhorrent personally. Just explaining the reasoning behind the breed's unusual look.