I agree with this and have an example. I just played one of the best games I have ever had in an online dynasty (bowl game, I was the underdog by far) with a buddy of mine. We both run wide open offenses, neither of us could stop the other... I ran similar looking plays a lot... forcing him to make the decision of 'do I manually cover this guy (if so I checked down) or do I bull rush or cover the flats (if so I hit a guy in the seem). He did the same thing to me... yeah the same plays got called a lot, but you could see as the game went on that we both tried EVERYTHING to stop each other... you could literally see the chess match unfolding and it was great. Game was legit, no unrealistic play calling otherwise / or exploitation of the system or any of that crap...
(BTW I lost in 5OTs 85-83... yes five... it was 49 all at the end of regulation).
The point is it was a human versus human game, where the opponent had the opportunity to make adjustments. If either of us used this exact strategy against a CPU I'd call cheese (even on myself), because then you are just trying to exploit a programming hole and bump stats for whatever reason.