on a par with
As good as, equal to, as in This violinist may be an amateur but he's on a par with professional orchestral players. The noun par has meant “that which is equal” since the mid-1600s; the idiom here was first recorded in 1832.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.