When Japan was conquered by USA in 1940s, the USA treated it with much more respect than the Europeans did vs the Ottoman Empire from WW1.
As a result, Japan was able to regrow into a world power. While the countries that formerly constituted the Ottomans are under a constant civil war (and major military groups, like ISIS, dream of re-establishing a religious empire of old: https://en.wikipedia.org/wiki/Ottoman_Caliphate)
Its not very hard to imagine a "cut up Japan", a hypothetical disarmed Japan where the USA would split between Britain / France / Russia / other members of the allies.
In fact, we can look to the (eastern part) of the Soviet Union to see how well splitting up countries went during WW2. The East / West Germany thing almost surely stunted Germany's growth back into its world standing.
--------
With that being said: the Ottomans were certainly in a decline by the late 1800s, before WWI broke out. But I can't imagine that WWI did those countries any favors.
the looming threat of communism from Russia and China played an important role in US's post-war policy in Japan and Japan's immediate post war recovery. While Japan was allowed to stay united as one, the Korean peninsula was divided, though the territory was never part of the WW2 theater. The Korean civil war led by the communist North likewise boosted Japan's quick recovery.
When Japan was conquered by USA in 1940s, the USA treated it with much more respect than the Europeans did vs the Ottoman Empire from WW1.
As a result, Japan was able to regrow into a world power. While the countries that formerly constituted the Ottomans are under a constant civil war (and major military groups, like ISIS, dream of re-establishing a religious empire of old: https://en.wikipedia.org/wiki/Ottoman_Caliphate)
Its not very hard to imagine a "cut up Japan", a hypothetical disarmed Japan where the USA would split between Britain / France / Russia / other members of the allies.
In fact, we can look to the (eastern part) of the Soviet Union to see how well splitting up countries went during WW2. The East / West Germany thing almost surely stunted Germany's growth back into its world standing.
--------
With that being said: the Ottomans were certainly in a decline by the late 1800s, before WWI broke out. But I can't imagine that WWI did those countries any favors.