George,
Just because Aegir looks like Vidar does not mean it is like Vidar. Any Class A-like design that fits in the same box as a Class AB design is going to have lower power and higher bias. There are no surprises there. Just like there are no surprises in that there are transformers, capacitors, resistors, and heatsinks used in both designs.
The "whole different design" I am talking about is the high-bias Continuity design aspect. Vidar is nothing like that. Vidar is a classic Class AB amp. Aegir has an unique output stage and has a lower bias that a 20 watt Class A would have.