That's odd.....I run 1 pusher electric fan on my 970hp small block and have zero cooling issues......but I also have a REAL radiator and not some cheap 225 dollar one. Pusher fans are not a problem if everything else is up to snuff.
I probably don’t have $250 tied up in my entire cooling system and it works just fine for my application. Not everyone needs or can afford the best of the best. I’m glad your “real” radiator works for your car.