How is he not? He's almost a carbon copy.
Aranda... 3 years of small-timey DC success at Hawaii and Utah State before moving to a P5 school. Three years at the P5 school taking their defense from 16th to 10th then down to 29th then back up to 7th. Then signs a big deal with LSU.
Elko... 3 years of small-timey DC success at Bowling Green before moving to P5 school. Three years at the P5 school taking their defense from 34th to 37th down to 60th then up to 28th. Then signs a big deal with Notre Dame.
Aranda had a positive delta of 9 spots from taking over. Elko had a positive delta of 6 spots from taking over. Each basically maintained in year 1, had significant regression in year 2, and then significant improvement in year 3 by efficiency metrics.
Mind you, Elko's starting point of "34" is also woefully inflated as Wake Forest was completely bereft of talent and in the three years preceding 2013 they were ranked in the 80s/90s. His "average" rating of his unit over his three years relative to his predecessor is significantly better than Aranda's. Aranda inherited a team that was 27, 20, 55, 16 before he got there with a solid foundation. Wake Forest
literally has the least talent of any ACC school.
And using raw/vanilla numbers instead of advanced stats is even more flattering for Elko.