Underpowered? overloaded.

[Igo kyu]

There were a lot of WW2 aircraft that were called underpowered, however it seems to me that that's letting off the designers too lightly. Really, the power source was more or less a given, and the designers should have based the design on the power that the engine they were going to use would produce.

I think that there's a pretty strong case to be made that what's called "underpowered" should usually be called "overloaded", or maybe even "overwinged".