The buck on the left is probably about 14" (twice the length of his 7"ears) and he has good diggers/prongs.
For a buck to score really well it needs to be heavy with good prongs and some length(generally 15" or better). The quality of that antelope depends a lot on the area and the genetics. In eastern Wyoming that would be a good buck, but in other areas it would only be average.
A trophy is in the eye of the beholder, so if you like him, take him. IMHO