Who's been rewriting my cheese?

"Over the last 12 years, Ms. Marks has risen faster than a pizza crust through the ranks of the Pizza Hut restaurant chain."
www.restaurantschools.com

Apparently I was misinformed. I thought, from what Ms. Marks told me, she rose quickly through the ranks of Pizza Hut (the restaurant chain).

I compared it to pizza dough rising.

The pizza crust was what rose through the chain — Ms. Marks just rose faster (and to god-only-knows-where).

And "During the last..." would be better than "Over."