I'm a big fan of the Kirby Lauson's, the 4 stroke equivalent of the Victa 2 stroke in my opinion
G'day wce and all 'mowa luvers'
I'll put in my two cents worth here...
In lawnmowers, I guess the world was divided between the 2-strokers and the 4-strokers.
I now feel that's an irrelevant view in ... the modern world.
I mean - just like the Holden/Ford divide - the World has moved on.
I happen to appreciate the 1960s Kirbys - and I should point this out ...
1950s Victas were 2-strokes and they gave Victa ... a great reputation.
[Here I would mention robust design, swing-back blades and remote air intakes]
But Victa made its money in the 1960s using, primarily, 4-strokes!
More Victa 4-strokes were sold in the 1960s than their 2-strokes.
That's what the market wanted.
Victa clawed back - brilliantly - with the larger engine (late 1960s), and
then with governing (c1972) and then electronic ignition (c1980s).
So, I do not think any definitive statement may be made for those years.
History shows the 4-stroke reigns supreme for the moment.
But new technologies will now take quick hold, I would think.
Cheers----------------------
Jack