Faeelin
Banned
Absolutely. The west just got extremely poor luck, it was not that structurally or militarily different from the East. No Adrianople, then likely no war between east and west, more stability within the West itself, less major barbarian invasions. There is thus a very good case that the West can at least survive until 500 AD with current borders intact. After that, well butterflies really makes it difficult to speculate.
The East was more urbanized and more defensible. Arguably it may have had a stronger peasant class, instead of huge aristocratic estates, and I'd bet it was more populated. Those seem like key differences.