The phrase "numerical terms" refers to using numbers to describe and quantify something. It means expressing information or measurements using numerical values. Full definition
All offer broadly similar performance (in numerical terms at least) and are similarly priced. (evo.co.uk)
Of course, there will be those who will claim that Android is a huge success in sheer numerical terms — no OS runs on more smartphones in the world today. (techpp.com)
No, I didn't say (or imply) that executives have more to lose, although in numerical terms that's clearly true. (businessethicsblog.com)