"Every new player comes in and tries to carve out a niche for themselves. I think it is a danger to try to be the 'next' person. You should never put any limitations on how good somebody can be and I wouldn't try to do that," said O'Driscoll.
"Garry is his own player. He does things that I didn't do as well as him and maybe there are some things he'll learn that I learned over the course of my career.
"It's unfair to compare any two players. People say they see similarities, that's not really for me to say.
"I'm really excited by him, I think he has all the attributes to be a top-class player. He sees the game a little bit earlier than most people.
"He sees the game unfolding. That's important for young players looking to survive in a pretty attritional game."
Ireland's next game sees them host France on February 24. Both sides are approaching the game after wins, Ireland won in Rome while France squeezed passed Scotland in Paris.
Round three of the RBS 6 Nations will decide whether teams are challenging for the title or in a scrap to finish in the top half. Never will that be more obvious than in Dublin on Saturday, when Ireland host France.