Quick answer: yes, Lindt 70% dark compares most closely to Ghirardelli 72% dark, so there's a bit of a discrepancy there before we look deeper.
Unfortunately Ghirardelli doesn't put nutrition facts on their website, so we turn to caloriecount.about.com. Lindt data from product page.
Unfortunately I don't trust CalorieCount info, somehow that bar manages to have 17 g of fat in a 3 g serving? but assuming the rest of the info is correct:
|Product||Servings||Fat grams per serving||Protein grams per serving||Carb grams per serving||Fiber grams per serving||Fat grams||Protein grams||Digestible Carb grams||Calories||% fat calories||Ketogenic Ratio|
|Ghirardelli 72% dark||1.0||17||2||17||4||17||2||13.00||213.00||71.83%||102.27%|
|Lindt 70% dark||1.0||19||3||17||3||19.00||3.00||14.00||239.00||71.55%||104.76%|
It's about a tie there, depending on if you're going with %fat calories or ketogenic ratio it could fall either way.