Im 100% convinced fans have no clue what they are talking about when they go to the "teams will have tape" theory. You could use the same logic in reverse. RG3 could get tape of a defense, and adjust just as easily.
I believe you are the one who has no clue what they are talking about.
RGIII is "already" studying tape on the defenses that he was playing. The fact is that there was basically NO tape on RGIII or the style of offense that Shanahan created in Washington. Teams did not know what to expect or game plan for.
Now, teams will study the 2012 tape more and adjust.
Not saying that RGIII's success will be less next season because of it. But, your reverse logic comment was basically no logic at all.