Imho Book is a better scrambler but maybe not necessarily a better runner... tho could be wrong.
Link: https://www.si.com/college/notredame/football/notre-dame-football-quarterback-comparison-jack-coan-ian-book?fbclid=IwAR0f_21EJ_fySFRTsouHfRAVk54JiycJL-f_rieoilwuUp4BNWgyHpVBEcs