Are you actually asserting that a Dwarf makes a sub-par Fighter from the perspective of damage output?
Because if so, you are just plain wrong. Dwarves have a host of abilities that give them more damage output as Fighters than most other races, including Dragonborn.
For example, Dwarf Fighters making opportunity attacks hit at least as often as Dragonborn (and probably a lot more often): Fighters add Wisdom to opportunity attack rolls, but Dragonborn get a Charisma bonus, and thus must trade off their Will defense against this class-based bonus. So the Dwarf either has a higher Will defense, or has a better attack bonus on opportunity attacks.
As another example, Dwarf Fighters get a bonus standard action every encounter -- can you guess what ability gives them this standard action? -- so now your numbers, which were already suspect since they don't include opportunity or combat challenge attacks, look like this:
Dwarf: 8(14)+17 = 112+17=129 * 20/20 = 129
Str-based: 9(13)+16 = 117+16=133 * 19/20 = 126.35
Yeah, that Dwarf sure needs a free damage boost.
-- N