Here is a good shot for some who want to understand.
Look at the larger spread out weld at how there is more flow and less of a sharp edge where a crack can start. This larger weld also helps to aneal the joint spreading the HAZ.
Yes = It costs more.
Yes = It is a stronger weld.
Yes = It takes way more time.
Yes = It makes the part stronger.
No = What is there that is no?
Take it or leave it, it is what it is....
Back to pictures...
So THATS why a high end prerunner costs $300,000? $40,000 in parts and material, 4 - 6 weeks to dry fit, then 10 1/2 months and $250,000 in welding labour to TIG weld it together?