My Trucks in order.
1996 1 ton SRW
2001 DRW
2011 DRW
Each truck has been a vast improvement over it's predecessor.
So there is SOME validity to a late model SRW being as capable as a early model DRW,,, at least as far as ratings go.
BUT 4 rear wheels will be more stable than two, regardless of the year. Assuming stock LT LRE tires.
And just as the late model SRWs are vastly improved... So are the DRWs.
Now some here have mentioned upgrading the tires and wheels to 22.5s.
This will in theory make a SRW just as capable as a DRW.
But the cost will be higher than just getting the DRW. As for the argument that the SRW makes for a better daily driver... That is a personal observation. For some maybe. For others like myself, it is no big deal.
What is TRUE is that using a SRW with 22.5s as a daily driver will be expensive. Those tires are NOT cheap, and using them for commuting or grocery getting will make for an expensive daily driver.
Another potential issue with this approach is the spare. Will an 22.5 spare be able to be stowed in the factory location?
I can think of two potential issues right off the bat. If it cannot be carried there.. It will need to be carried somewhere.