I fully support consistency in laws regarding the control of availability of entertainment media to children. And I support it being illegal to sell or rent R-rated (ESRB - M?) games to kids. If parents want to get them for their kids, then that's a parenting decision, and if parents don't want to pay attention to what game or movie content they are allowing their kids to see then that's a parenting decision too.
As a parent who games I think I'm a lot more careful about what my kids play than most non-gaming parents I know who have gamer kids.
If this law creates an inconsistency between games and movies then it's bad. But it's bad that movies get a free ride, not bad that games are having access to minors restricted.
In my country I'm glad the law keeps an eye out for my kid when I don't have my eye on my kid.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix