It's only the same if you have to double the number of relays. Generally, you don't -- since you never have all the slots filled and the line is always at less than peak efficiency. (And I don't see how you can change that.)
Using Raton as an example, IIRC we ran 4 relays in std rifle for 135 shooters on 64 banks. That's not particularly efficient but it was what was needed for the requested squadding. (Keep in mind that squadding problems tend to iron themselves out as relay numbers increase since it's easier to 'fit' a small group into 5 relays than into 3 or 4...)
That's 8 resets per relay (2 for each animal) times 4 relays. 32 resets. I figured that we could have done it in 5 relays shooting 10 & reset. That's based on 32 banks for the same 135 shooters and it comes to 20 resets. That would have saved 12 times that we had to check the line and put setters out and I think that those 12 resets cost more time than another relay would.
Dunno -- maybe you're right. Or maybe the only way to really see is to run it both ways and find out!
Anyway, to answer Chris' question: Our local match procedure of 1st animal standing and keep count on the honor system works and saves a lot of time. Reset only as needed. 'Shoot around' any problems you can. Couldn't use it for registered matches, naturally, but it works well when 'the gang' gathers on a Sunday!