Skylane.
Do not forget the F27-200/400/600's could carry 44 pax and the F27-500 56 pax if the seat pitch of the SF340/Brasilia were applied. The F27's also had a major galley and in some cases heavy duty floors for QC operations as well as heavy doors.
In my opinion the aircraft are in different categories.
Some other major differences
Number of cabin crew
Fuel capacity
Payload/range
The F27's were solid as a rock and I doubt the SF340/Brasilia will ever match the hours/cycle limit of the F27.