Moo said, one way or the udder
That's just not true. Not even a valuable generalization. Most casinos would accept a 100 unit winner without even running tape on your play if the unit was $5. Even at $25 unit ($2500 win) it's probably not getting reviewed on a Friday night at most places.
Totally agree. I frequently have 80-100 unit wins. I frequently ignore optimal ramps.