Let's make some important distinctions between GOOD GENETICS..
There are GOOD GENES for MUSCLE MASS..
There are GOOD GENES for being LEAN..
There are GOOD GENES for muscular SHAPE..
There are GOOD GENES for SKELETAL STRUCTURE..
And then there are GOOD GENES for ALL OF THE ABOVE.
Out of the characteristics that determine one's genetic potential for bodybuilding, I have 3 of the 4; I am extremely LEAN naturally, I have great SHAPE, and I have an awesome structure at 5"10 and a 29 inch waist. The only thing that I don't have are awesome genes for sheer muscle mass..
I think Arnold was kind of in the same boat as I am, which is why his build was always considered inferior to Serigo's--who posessed ALL OF THE BODYBUILDING GENES.
Top genetics in bodybuilding, of all-time, in my opnion:
1.) Sergio Oliva(4/4)
2.) Ronnie Coleman(4/4)
3.) Flex Wheeler(4/4)
4.) Kevin Levrone(4/4)
5.) Kai Greene(4/4)
6.) Robby Robinson(4/4)
7.) Lou Ferrigno(4/4)
8.) Arnold(4/4)
9.) Dorian Yates(3/4) - Lacking STRUCTURAL genes
10.) Frank Zane(3/4) - Lacking SIZE genes