It matters very little what process is used if they end up with equivalent sized transistors (which they do). AMD have a SLIGHT edge, but nothing close to what you may imagine from the 5nm - 10 nm gap.
Check out the Hexus article "Intel 14nm and AMD/TSMC 7nm transistors micro-compared" (which i cannot link to)
Quotethe relationship between node size, half-pitch, and gate length has significantly loosened since the early 1990s. The XXnm figure reflects process history more than progress, asserts the OC expert, and thus it isn't very useful as a metric to compare between chip makers.