It's true that lithographic technologies ("10nm") don't map to a specific feature size, but TSMC 10nm is denser than Intel 14nm. You may be thinking of Intel 14

It's true that lithographic technologies ("10nm") don't map to a specific feature size, but TSMC 10nm is denser than Intel 14nm. You may be thinking of Intel 14nm vs TSMC 16 nm vs Samsung 14 nm, which all have comparable fin pitches, and it's certainly true that for the same technology process, Intel has been the most ambitious about what feature size that translates to in the last few years.