Yes QT will be much easir in supporting portrait / landscape auto sizing.

I remember QT based Qtopia for the Zaurus and the QT layout widgets aloowed auto placement and sizing of the controls in an app when rotated from landscape to portrait.

Of couirse it still require some thinking and planning ahead when designing the individual apps - but the native QT based environment allowed that very easily.

This is the reason why Nokia is insisting on implementing OS level rotation support in QT based Maemo 6 (MeeGo) - I guess.