Reply to "Post war ZW transformer circuit breaker pops after 5 - 10 minutes of running 3 trains simultaneously; what's up?"

So Lionel says a ZW of any type can run 4 trains with no problems.   What baffles me is if they can.  Why are many here only running two trains per ZW??     How is that running circles around a CW-80 that I know will run 3 trains on one transformer for as long as you want them to run?   If it takes 2 ZWs to run 4 trains, or 5 ZWs  to run 10 trains, what advantage does it have over 4 or 5 CW80s running ONE train each? Or even 4 or 5 CW40s running 4 or 5 trains?   In 1954, 1923, or 2017 it just aint making sense to me??   Or that Z4000 or whatever it is.  Its description says it will only run two trains.   But I do understand the ZW and the other transformer do look cool.  I think any modern transformer is fine ..  and safe..  If you have good track wiring and keep your rails and equipment clean.