Eh... I'd rather say Benzema is a great player who is actually 5th highest scorer in UCL history and has better ratio than Henry himself in that competition. And it's even more impressive when you consider that Benzema had to compete with Higuain/Adebayor for playing time, being 3rd fiddle in Madrid's attacking line since Bale's arrival.
And regarding Benzema's contributions for France, I disagree. IIRC, he completed the 3rd most dribbles for all players, and had most chances created in the French team. Reminder that in 2012 this was the peak of (by their standards) the shitty French NT with average L1 players being called to be starters. Also, Benzema helped France qualifying for World Cup in Brazil and was their best playing in the tournament.
I'd be interesting to see him playing with Pogba, Griezmann who're much more matured and others from that French golden generation.