If you took to identical twins...IDENTICAL in every genetic way...and put them on a weight training program:

They train exactly the same way for six months. Lets say, 3 days per week on the following program:

-bench press
-bent row
-military press
-barbell curl
-skull crusher
-crunches

4 sets of each movement, 8-10 reps each, same progess as far as weights and reps, etc

For the following 6 months one twin stays on the exact same program, but the other one switches to this:

-bench press
-incline press
-military press
-side lateral
-barbell curl
-preacher curl
-skull crusher
-overhead dumbell extension
-crunches
-reverse crunches

Overall sets still the same...same rep scheme...both make equal progress in their lifts.

Everything else being equal, do their physiques look the same at the end of 1 year?